Home / 11,000.72-15,173.16-7,279.76

Finding the Fourth Proportional to 11,000.72, 15,173.16 and 7,279.76

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Solution

The fourth proportional to 11,000.72, 15,173.16 and 7,279.76 is: 10,040.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,000.72 : 15,173.16 = 7,279.76 : x
  2. Step 2: Convert to fraction form
    11,000.72/15,173.16 = 7,279.76/x
  3. Step 3: Cross multiply
    11,000.72x = 15,173.16 × 7,279.76
  4. Step 4: Simplify right side
    11,000.72x = 110,456,963.24
  5. Step 5: Solve for x
    x = 110,456,963.24/11,000.72
  6. Step 6: Final answer
    x = 10,040.88

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.