Home / 31,425.11-43,324.20-21,336.03

Finding the Fourth Proportional to 31,425.11, 43,324.20 and 21,336.03

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Solution

The fourth proportional to 31,425.11, 43,324.20 and 21,336.03 is: 29,414.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,425.11 : 43,324.20 = 21,336.03 : x
  2. Step 2: Convert to fraction form
    31,425.11/43,324.20 = 21,336.03/x
  3. Step 3: Cross multiply
    31,425.11x = 43,324.20 × 21,336.03
  4. Step 4: Simplify right side
    31,425.11x = 924,366,552.78
  5. Step 5: Solve for x
    x = 924,366,552.78/31,425.11
  6. Step 6: Final answer
    x = 29,414.91

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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.