Home / 12,521.28-17,251.55-8,264.76

Finding the Fourth Proportional to 12,521.28, 17,251.55 and 8,264.76

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Solution

The fourth proportional to 12,521.28, 17,251.55 and 8,264.76 is: 11,387.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.28 : 17,251.55 = 8,264.76 : x
  2. Step 2: Convert to fraction form
    12,521.28/17,251.55 = 8,264.76/x
  3. Step 3: Cross multiply
    12,521.28x = 17,251.55 × 8,264.76
  4. Step 4: Simplify right side
    12,521.28x = 142,579,879.05
  5. Step 5: Solve for x
    x = 142,579,879.05/12,521.28
  6. Step 6: Final answer
    x = 11,387.01

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Half scale
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Double scale
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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.