Home / 31,712.80-47,534.86-20,627.41

Finding the Fourth Proportional to 31,712.80, 47,534.86 and 20,627.41

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Solution

The fourth proportional to 31,712.80, 47,534.86 and 20,627.41 is: 30,918.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,712.80 : 47,534.86 = 20,627.41 : x
  2. Step 2: Convert to fraction form
    31,712.80/47,534.86 = 20,627.41/x
  3. Step 3: Cross multiply
    31,712.80x = 47,534.86 × 20,627.41
  4. Step 4: Simplify right side
    31,712.80x = 980,521,046.51
  5. Step 5: Solve for x
    x = 980,521,046.51/31,712.80
  6. Step 6: Final answer
    x = 30,918.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.