Home / 11,160.20-16,740.30-9,489.80

Finding the Fourth Proportional to 11,160.20, 16,740.30 and 9,489.80

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Solution

The fourth proportional to 11,160.20, 16,740.30 and 9,489.80 is: 14,234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,160.20 : 16,740.30 = 9,489.80 : x
  2. Step 2: Convert to fraction form
    11,160.20/16,740.30 = 9,489.80/x
  3. Step 3: Cross multiply
    11,160.20x = 16,740.30 × 9,489.80
  4. Step 4: Simplify right side
    11,160.20x = 158,862,098.94
  5. Step 5: Solve for x
    x = 158,862,098.94/11,160.20
  6. Step 6: Final answer
    x = 14,234.70

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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.