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Finding the Fourth Proportional to 11,154.78, 16,711.11 and 8,677.62

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Solution

The fourth proportional to 11,154.78, 16,711.11 and 8,677.62 is: 13,000.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.78 : 16,711.11 = 8,677.62 : x
  2. Step 2: Convert to fraction form
    11,154.78/16,711.11 = 8,677.62/x
  3. Step 3: Cross multiply
    11,154.78x = 16,711.11 × 8,677.62
  4. Step 4: Simplify right side
    11,154.78x = 145,012,662.36
  5. Step 5: Solve for x
    x = 145,012,662.36/11,154.78
  6. Step 6: Final answer
    x = 13,000.05

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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.