Home / 13,398.33-18,489.42-7,429.71

Finding the Fourth Proportional to 13,398.33, 18,489.42 and 7,429.71

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Solution

The fourth proportional to 13,398.33, 18,489.42 and 7,429.71 is: 10,252.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.33 : 18,489.42 = 7,429.71 : x
  2. Step 2: Convert to fraction form
    13,398.33/18,489.42 = 7,429.71/x
  3. Step 3: Cross multiply
    13,398.33x = 18,489.42 × 7,429.71
  4. Step 4: Simplify right side
    13,398.33x = 137,371,028.67
  5. Step 5: Solve for x
    x = 137,371,028.67/13,398.33
  6. Step 6: Final answer
    x = 10,252.85

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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.