Home / 31,655.42-43,693.11-19,711.70

Finding the Fourth Proportional to 31,655.42, 43,693.11 and 19,711.70

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Solution

The fourth proportional to 31,655.42, 43,693.11 and 19,711.70 is: 27,207.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,655.42 : 43,693.11 = 19,711.70 : x
  2. Step 2: Convert to fraction form
    31,655.42/43,693.11 = 19,711.70/x
  3. Step 3: Cross multiply
    31,655.42x = 43,693.11 × 19,711.70
  4. Step 4: Simplify right side
    31,655.42x = 861,265,476.39
  5. Step 5: Solve for x
    x = 861,265,476.39/31,655.42
  6. Step 6: Final answer
    x = 27,207.52

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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.