Home / 13,397.29-18,488.31-7,428.94

Finding the Fourth Proportional to 13,397.29, 18,488.31 and 7,428.94

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Solution

The fourth proportional to 13,397.29, 18,488.31 and 7,428.94 is: 10,251.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.29 : 18,488.31 = 7,428.94 : x
  2. Step 2: Convert to fraction form
    13,397.29/18,488.31 = 7,428.94/x
  3. Step 3: Cross multiply
    13,397.29x = 18,488.31 × 7,428.94
  4. Step 4: Simplify right side
    13,397.29x = 137,348,545.69
  5. Step 5: Solve for x
    x = 137,348,545.69/13,397.29
  6. Step 6: Final answer
    x = 10,251.96

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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.