Home / 12,521.39-17,278.92-7,216.29

Finding the Fourth Proportional to 12,521.39, 17,278.92 and 7,216.29

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Solution

The fourth proportional to 12,521.39, 17,278.92 and 7,216.29 is: 9,958.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,521.39 : 17,278.92 = 7,216.29 : x
  2. Step 2: Convert to fraction form
    12,521.39/17,278.92 = 7,216.29/x
  3. Step 3: Cross multiply
    12,521.39x = 17,278.92 × 7,216.29
  4. Step 4: Simplify right side
    12,521.39x = 124,689,697.61
  5. Step 5: Solve for x
    x = 124,689,697.61/12,521.39
  6. Step 6: Final answer
    x = 9,958.14

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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.