Home / 14,001.28-19,321.76-7,713.66

Finding the Fourth Proportional to 14,001.28, 19,321.76 and 7,713.66

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Solution

The fourth proportional to 14,001.28, 19,321.76 and 7,713.66 is: 10,644.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,001.28 : 19,321.76 = 7,713.66 : x
  2. Step 2: Convert to fraction form
    14,001.28/19,321.76 = 7,713.66/x
  3. Step 3: Cross multiply
    14,001.28x = 19,321.76 × 7,713.66
  4. Step 4: Simplify right side
    14,001.28x = 149,041,487.24
  5. Step 5: Solve for x
    x = 149,041,487.24/14,001.28
  6. Step 6: Final answer
    x = 10,644.85

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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.