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Finding the Fourth Proportional to 19,992.60, 29,988.90 and 8,306.73

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Solution

The fourth proportional to 19,992.60, 29,988.90 and 8,306.73 is: 12,460.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,992.60 : 29,988.90 = 8,306.73 : x
  2. Step 2: Convert to fraction form
    19,992.60/29,988.90 = 8,306.73/x
  3. Step 3: Cross multiply
    19,992.60x = 29,988.90 × 8,306.73
  4. Step 4: Simplify right side
    19,992.60x = 249,109,695.30
  5. Step 5: Solve for x
    x = 249,109,695.30/19,992.60
  6. Step 6: Final answer
    x = 12,460.10

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Similar ratio
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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.