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Finding the Fourth Proportional to 11,008.81, 16,492.45 and 8,531.52

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Solution

The fourth proportional to 11,008.81, 16,492.45 and 8,531.52 is: 12,781.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,008.81 : 16,492.45 = 8,531.52 : x
  2. Step 2: Convert to fraction form
    11,008.81/16,492.45 = 8,531.52/x
  3. Step 3: Cross multiply
    11,008.81x = 16,492.45 × 8,531.52
  4. Step 4: Simplify right side
    11,008.81x = 140,705,541.90
  5. Step 5: Solve for x
    x = 140,705,541.90/11,008.81
  6. Step 6: Final answer
    x = 12,781.18

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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.