Home / 18,753.90-25,882.47-13,715.70

Finding the Fourth Proportional to 18,753.90, 25,882.47 and 13,715.70

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Solution

The fourth proportional to 18,753.90, 25,882.47 and 13,715.70 is: 18,929.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,753.90 : 25,882.47 = 13,715.70 : x
  2. Step 2: Convert to fraction form
    18,753.90/25,882.47 = 13,715.70/x
  3. Step 3: Cross multiply
    18,753.90x = 25,882.47 × 13,715.70
  4. Step 4: Simplify right side
    18,753.90x = 354,996,193.78
  5. Step 5: Solve for x
    x = 354,996,193.78/18,753.90
  6. Step 6: Final answer
    x = 18,929.19

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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.