Home / 13,397.13-18,487.71-7,428.92

Finding the Fourth Proportional to 13,397.13, 18,487.71 and 7,428.92

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Solution

The fourth proportional to 13,397.13, 18,487.71 and 7,428.92 is: 10,251.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.13 : 18,487.71 = 7,428.92 : x
  2. Step 2: Convert to fraction form
    13,397.13/18,487.71 = 7,428.92/x
  3. Step 3: Cross multiply
    13,397.13x = 18,487.71 × 7,428.92
  4. Step 4: Simplify right side
    13,397.13x = 137,343,626.13
  5. Step 5: Solve for x
    x = 137,343,626.13/13,397.13
  6. Step 6: Final answer
    x = 10,251.72

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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.