Home / 31,729.78-43,767.25-20,414.01

Finding the Fourth Proportional to 31,729.78, 43,767.25 and 20,414.01

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Solution

The fourth proportional to 31,729.78, 43,767.25 and 20,414.01 is: 28,158.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,729.78 : 43,767.25 = 20,414.01 : x
  2. Step 2: Convert to fraction form
    31,729.78/43,767.25 = 20,414.01/x
  3. Step 3: Cross multiply
    31,729.78x = 43,767.25 × 20,414.01
  4. Step 4: Simplify right side
    31,729.78x = 893,465,079.17
  5. Step 5: Solve for x
    x = 893,465,079.17/31,729.78
  6. Step 6: Final answer
    x = 28,158.57

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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.