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Finding the Fourth Proportional to 9,992.20, 14,929.85 and 9,992.20

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Solution

The fourth proportional to 9,992.20, 14,929.85 and 9,992.20 is: 14,929.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,992.20 : 14,929.85 = 9,992.20 : x
  2. Step 2: Convert to fraction form
    9,992.20/14,929.85 = 9,992.20/x
  3. Step 3: Cross multiply
    9,992.20x = 14,929.85 × 9,992.20
  4. Step 4: Simplify right side
    9,992.20x = 149,182,047.17
  5. Step 5: Solve for x
    x = 149,182,047.17/9,992.20
  6. Step 6: Final answer
    x = 14,929.85

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.