Home / 11,077.20-16,615.80-9,108.90

Finding the Fourth Proportional to 11,077.20, 16,615.80 and 9,108.90

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Solution

The fourth proportional to 11,077.20, 16,615.80 and 9,108.90 is: 13,663.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,077.20 : 16,615.80 = 9,108.90 : x
  2. Step 2: Convert to fraction form
    11,077.20/16,615.80 = 9,108.90/x
  3. Step 3: Cross multiply
    11,077.20x = 16,615.80 × 9,108.90
  4. Step 4: Simplify right side
    11,077.20x = 151,351,660.62
  5. Step 5: Solve for x
    x = 151,351,660.62/11,077.20
  6. Step 6: Final answer
    x = 13,663.35

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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.