Home / 18,397.40-25,387.68-10,013.90

Finding the Fourth Proportional to 18,397.40, 25,387.68 and 10,013.90

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Solution

The fourth proportional to 18,397.40, 25,387.68 and 10,013.90 is: 13,818.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,397.40 : 25,387.68 = 10,013.90 : x
  2. Step 2: Convert to fraction form
    18,397.40/25,387.68 = 10,013.90/x
  3. Step 3: Cross multiply
    18,397.40x = 25,387.68 × 10,013.90
  4. Step 4: Simplify right side
    18,397.40x = 254,229,688.75
  5. Step 5: Solve for x
    x = 254,229,688.75/18,397.40
  6. Step 6: Final answer
    x = 13,818.78

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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.