Home / 13,397.01-18,488.45-7,428.68

Finding the Fourth Proportional to 13,397.01, 18,488.45 and 7,428.68

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Solution

The fourth proportional to 13,397.01, 18,488.45 and 7,428.68 is: 10,251.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,397.01 : 18,488.45 = 7,428.68 : x
  2. Step 2: Convert to fraction form
    13,397.01/18,488.45 = 7,428.68/x
  3. Step 3: Cross multiply
    13,397.01x = 18,488.45 × 7,428.68
  4. Step 4: Simplify right side
    13,397.01x = 137,344,774.21
  5. Step 5: Solve for x
    x = 137,344,774.21/13,397.01
  6. Step 6: Final answer
    x = 10,251.90

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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.