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Finding the Fourth Proportional to 19,888.52, 29,839.76 and 8,793.76

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Solution

The fourth proportional to 19,888.52, 29,839.76 and 8,793.76 is: 13,193.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,888.52 : 29,839.76 = 8,793.76 : x
  2. Step 2: Convert to fraction form
    19,888.52/29,839.76 = 8,793.76/x
  3. Step 3: Cross multiply
    19,888.52x = 29,839.76 × 8,793.76
  4. Step 4: Simplify right side
    19,888.52x = 262,403,687.90
  5. Step 5: Solve for x
    x = 262,403,687.90/19,888.52
  6. Step 6: Final answer
    x = 13,193.73

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1.5x scale

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.