Home / 28,104.21-38,783.34-15,357.12

Finding the Fourth Proportional to 28,104.21, 38,783.34 and 15,357.12

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Solution

The fourth proportional to 28,104.21, 38,783.34 and 15,357.12 is: 21,192.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.21 : 38,783.34 = 15,357.12 : x
  2. Step 2: Convert to fraction form
    28,104.21/38,783.34 = 15,357.12/x
  3. Step 3: Cross multiply
    28,104.21x = 38,783.34 × 15,357.12
  4. Step 4: Simplify right side
    28,104.21x = 595,600,406.38
  5. Step 5: Solve for x
    x = 595,600,406.38/28,104.21
  6. Step 6: Final answer
    x = 21,192.57

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Find fourth proportional to 14,052.11, 19,391.67 and 7,678.56
Half scale
Find fourth proportional to 56,208.42, 77,566.68 and 30,714.24
Double scale
Find fourth proportional to 28,105.21, 38,784.72 and 15,358.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.