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Finding the Fourth Proportional to 11,098.80, 16,615.80 and 9,932.40

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Solution

The fourth proportional to 11,098.80, 16,615.80 and 9,932.40 is: 14,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,098.80 : 16,615.80 = 9,932.40 : x
  2. Step 2: Convert to fraction form
    11,098.80/16,615.80 = 9,932.40/x
  3. Step 3: Cross multiply
    11,098.80x = 16,615.80 × 9,932.40
  4. Step 4: Simplify right side
    11,098.80x = 165,034,771.92
  5. Step 5: Solve for x
    x = 165,034,771.92/11,098.80
  6. Step 6: Final answer
    x = 14,869.60

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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.