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Finding the Fourth Proportional to 20,605.52, 30,898.20 and 14,368.52

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Solution

The fourth proportional to 20,605.52, 30,898.20 and 14,368.52 is: 21,545.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.52 : 30,898.20 = 14,368.52 : x
  2. Step 2: Convert to fraction form
    20,605.52/30,898.20 = 14,368.52/x
  3. Step 3: Cross multiply
    20,605.52x = 30,898.20 × 14,368.52
  4. Step 4: Simplify right side
    20,605.52x = 443,961,404.66
  5. Step 5: Solve for x
    x = 443,961,404.66/20,605.52
  6. Step 6: Final answer
    x = 21,545.75

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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.