Home / 28,383.70-39,168.45-15,808.18

Finding the Fourth Proportional to 28,383.70, 39,168.45 and 15,808.18

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Solution

The fourth proportional to 28,383.70, 39,168.45 and 15,808.18 is: 21,814.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,383.70 : 39,168.45 = 15,808.18 : x
  2. Step 2: Convert to fraction form
    28,383.70/39,168.45 = 15,808.18/x
  3. Step 3: Cross multiply
    28,383.70x = 39,168.45 × 15,808.18
  4. Step 4: Simplify right side
    28,383.70x = 619,181,907.92
  5. Step 5: Solve for x
    x = 619,181,907.92/28,383.70
  6. Step 6: Final answer
    x = 21,814.70

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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.