Home / 13,397.92-18,489.28-7,429.68

Finding the Fourth Proportional to 13,397.92, 18,489.28 and 7,429.68

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Solution

The fourth proportional to 13,397.92, 18,489.28 and 7,429.68 is: 10,253.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.92 : 18,489.28 = 7,429.68 : x
  2. Step 2: Convert to fraction form
    13,397.92/18,489.28 = 7,429.68/x
  3. Step 3: Cross multiply
    13,397.92x = 18,489.28 × 7,429.68
  4. Step 4: Simplify right side
    13,397.92x = 137,369,433.83
  5. Step 5: Solve for x
    x = 137,369,433.83/13,397.92
  6. Step 6: Final answer
    x = 10,253.04

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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.