Home / 31,701.05-47,517.25-20,615.70

Finding the Fourth Proportional to 31,701.05, 47,517.25 and 20,615.70

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Solution

The fourth proportional to 31,701.05, 47,517.25 and 20,615.70 is: 30,901.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,701.05 : 47,517.25 = 20,615.70 : x
  2. Step 2: Convert to fraction form
    31,701.05/47,517.25 = 20,615.70/x
  3. Step 3: Cross multiply
    31,701.05x = 47,517.25 × 20,615.70
  4. Step 4: Simplify right side
    31,701.05x = 979,601,133.24
  5. Step 5: Solve for x
    x = 979,601,133.24/31,701.05
  6. Step 6: Final answer
    x = 30,901.22

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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.