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Finding the Fourth Proportional to 11,000.80, 16,502.40 and 10,655.20

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Solution

The fourth proportional to 11,000.80, 16,502.40 and 10,655.20 is: 15,983.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,000.80 : 16,502.40 = 10,655.20 : x
  2. Step 2: Convert to fraction form
    11,000.80/16,502.40 = 10,655.20/x
  3. Step 3: Cross multiply
    11,000.80x = 16,502.40 × 10,655.20
  4. Step 4: Simplify right side
    11,000.80x = 175,836,372.48
  5. Step 5: Solve for x
    x = 175,836,372.48/11,000.80
  6. Step 6: Final answer
    x = 15,983.96

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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.