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Finding the Fourth Proportional to 15,948.60, 22,008.96 and 8,778.94

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Solution

The fourth proportional to 15,948.60, 22,008.96 and 8,778.94 is: 12,114.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,948.60 : 22,008.96 = 8,778.94 : x
  2. Step 2: Convert to fraction form
    15,948.60/22,008.96 = 8,778.94/x
  3. Step 3: Cross multiply
    15,948.60x = 22,008.96 × 8,778.94
  4. Step 4: Simplify right side
    15,948.60x = 193,215,339.30
  5. Step 5: Solve for x
    x = 193,215,339.30/15,948.60
  6. Step 6: Final answer
    x = 12,114.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.