Home / 28,203.58-38,903.30-18,145.12

Finding the Fourth Proportional to 28,203.58, 38,903.30 and 18,145.12

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Solution

The fourth proportional to 28,203.58, 38,903.30 and 18,145.12 is: 25,028.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.58 : 38,903.30 = 18,145.12 : x
  2. Step 2: Convert to fraction form
    28,203.58/38,903.30 = 18,145.12/x
  3. Step 3: Cross multiply
    28,203.58x = 38,903.30 × 18,145.12
  4. Step 4: Simplify right side
    28,203.58x = 705,905,046.90
  5. Step 5: Solve for x
    x = 705,905,046.90/28,203.58
  6. Step 6: Final answer
    x = 25,028.92

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Half scale
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Double scale
Find fourth proportional to 28,204.58, 38,904.68 and 18,146.12
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.