Home / 22,638.62-31,272.80-21,531.46

Finding the Fourth Proportional to 22,638.62, 31,272.80 and 21,531.46

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Solution

The fourth proportional to 22,638.62, 31,272.80 and 21,531.46 is: 29,743.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,638.62 : 31,272.80 = 21,531.46 : x
  2. Step 2: Convert to fraction form
    22,638.62/31,272.80 = 21,531.46/x
  3. Step 3: Cross multiply
    22,638.62x = 31,272.80 × 21,531.46
  4. Step 4: Simplify right side
    22,638.62x = 673,349,042.29
  5. Step 5: Solve for x
    x = 673,349,042.29/22,638.62
  6. Step 6: Final answer
    x = 29,743.38

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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.