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Finding the Fourth Proportional to 15,214.52, 20,996 and 8,590.52

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Solution

The fourth proportional to 15,214.52, 20,996 and 8,590.52 is: 11,854.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,214.52 : 20,996 = 8,590.52 : x
  2. Step 2: Convert to fraction form
    15,214.52/20,996 = 8,590.52/x
  3. Step 3: Cross multiply
    15,214.52x = 20,996 × 8,590.52
  4. Step 4: Simplify right side
    15,214.52x = 180,366,557.92
  5. Step 5: Solve for x
    x = 180,366,557.92/15,214.52
  6. Step 6: Final answer
    x = 11,854.90

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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.