Home / 13,138.68-19,691.52-6,566.70

Finding the Fourth Proportional to 13,138.68, 19,691.52 and 6,566.70

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Solution

The fourth proportional to 13,138.68, 19,691.52 and 6,566.70 is: 9,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.68 : 19,691.52 = 6,566.70 : x
  2. Step 2: Convert to fraction form
    13,138.68/19,691.52 = 6,566.70/x
  3. Step 3: Cross multiply
    13,138.68x = 19,691.52 × 6,566.70
  4. Step 4: Simplify right side
    13,138.68x = 129,308,304.38
  5. Step 5: Solve for x
    x = 129,308,304.38/13,138.68
  6. Step 6: Final answer
    x = 9,841.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.