Home / 31,737.47-43,780.33-20,231.02

Finding the Fourth Proportional to 31,737.47, 43,780.33 and 20,231.02

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Solution

The fourth proportional to 31,737.47, 43,780.33 and 20,231.02 is: 27,907.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,737.47 : 43,780.33 = 20,231.02 : x
  2. Step 2: Convert to fraction form
    31,737.47/43,780.33 = 20,231.02/x
  3. Step 3: Cross multiply
    31,737.47x = 43,780.33 × 20,231.02
  4. Step 4: Simplify right side
    31,737.47x = 885,720,615.96
  5. Step 5: Solve for x
    x = 885,720,615.96/31,737.47
  6. Step 6: Final answer
    x = 27,907.72

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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.