Home / 31,655.43-43,693.11-19,711.71

Finding the Fourth Proportional to 31,655.43, 43,693.11 and 19,711.71

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Solution

The fourth proportional to 31,655.43, 43,693.11 and 19,711.71 is: 27,207.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,655.43 : 43,693.11 = 19,711.71 : x
  2. Step 2: Convert to fraction form
    31,655.43/43,693.11 = 19,711.71/x
  3. Step 3: Cross multiply
    31,655.43x = 43,693.11 × 19,711.71
  4. Step 4: Simplify right side
    31,655.43x = 861,265,913.32
  5. Step 5: Solve for x
    x = 861,265,913.32/31,655.43
  6. Step 6: Final answer
    x = 27,207.53

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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.