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Finding the Fourth Proportional to 11,074.70, 16,612.05 and 9,981.20

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Solution

The fourth proportional to 11,074.70, 16,612.05 and 9,981.20 is: 14,971.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,074.70 : 16,612.05 = 9,981.20 : x
  2. Step 2: Convert to fraction form
    11,074.70/16,612.05 = 9,981.20/x
  3. Step 3: Cross multiply
    11,074.70x = 16,612.05 × 9,981.20
  4. Step 4: Simplify right side
    11,074.70x = 165,808,193.46
  5. Step 5: Solve for x
    x = 165,808,193.46/11,074.70
  6. Step 6: Final answer
    x = 14,971.80

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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.