Home / 31,233.32-43,117.62-21,214.76

Finding the Fourth Proportional to 31,233.32, 43,117.62 and 21,214.76

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Solution

The fourth proportional to 31,233.32, 43,117.62 and 21,214.76 is: 29,286.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,233.32 : 43,117.62 = 21,214.76 : x
  2. Step 2: Convert to fraction form
    31,233.32/43,117.62 = 21,214.76/x
  3. Step 3: Cross multiply
    31,233.32x = 43,117.62 × 21,214.76
  4. Step 4: Simplify right side
    31,233.32x = 914,729,960.07
  5. Step 5: Solve for x
    x = 914,729,960.07/31,233.32
  6. Step 6: Final answer
    x = 29,286.99

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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.