Home / 22,611.78-31,204.44-12,540.42

Finding the Fourth Proportional to 22,611.78, 31,204.44 and 12,540.42

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Solution

The fourth proportional to 22,611.78, 31,204.44 and 12,540.42 is: 17,305.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,611.78 : 31,204.44 = 12,540.42 : x
  2. Step 2: Convert to fraction form
    22,611.78/31,204.44 = 12,540.42/x
  3. Step 3: Cross multiply
    22,611.78x = 31,204.44 × 12,540.42
  4. Step 4: Simplify right side
    22,611.78x = 391,316,783.46
  5. Step 5: Solve for x
    x = 391,316,783.46/22,611.78
  6. Step 6: Final answer
    x = 17,305.88

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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.