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Finding the Fourth Proportional to 19,881.52, 29,817.06 and 10,508.92

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Solution

The fourth proportional to 19,881.52, 29,817.06 and 10,508.92 is: 15,760.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.52 : 29,817.06 = 10,508.92 : x
  2. Step 2: Convert to fraction form
    19,881.52/29,817.06 = 10,508.92/x
  3. Step 3: Cross multiply
    19,881.52x = 29,817.06 × 10,508.92
  4. Step 4: Simplify right side
    19,881.52x = 313,345,098.18
  5. Step 5: Solve for x
    x = 313,345,098.18/19,881.52
  6. Step 6: Final answer
    x = 15,760.62

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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.