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Finding the Fourth Proportional to 11,000.10, 16,500.15 and 10,611.30

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Solution

The fourth proportional to 11,000.10, 16,500.15 and 10,611.30 is: 15,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,000.10 : 16,500.15 = 10,611.30 : x
  2. Step 2: Convert to fraction form
    11,000.10/16,500.15 = 10,611.30/x
  3. Step 3: Cross multiply
    11,000.10x = 16,500.15 × 10,611.30
  4. Step 4: Simplify right side
    11,000.10x = 175,088,041.70
  5. Step 5: Solve for x
    x = 175,088,041.70/11,000.10
  6. Step 6: Final answer
    x = 15,916.95

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Double scale
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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.