Home / 31,397.20-47,052.60-20,837.20

Finding the Fourth Proportional to 31,397.20, 47,052.60 and 20,837.20

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Solution

The fourth proportional to 31,397.20, 47,052.60 and 20,837.20 is: 31,227.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,397.20 : 47,052.60 = 20,837.20 : x
  2. Step 2: Convert to fraction form
    31,397.20/47,052.60 = 20,837.20/x
  3. Step 3: Cross multiply
    31,397.20x = 47,052.60 × 20,837.20
  4. Step 4: Simplify right side
    31,397.20x = 980,444,436.72
  5. Step 5: Solve for x
    x = 980,444,436.72/31,397.20
  6. Step 6: Final answer
    x = 31,227.13

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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.