Home / 31,913.32-47,839.26-20,197.48

Finding the Fourth Proportional to 31,913.32, 47,839.26 and 20,197.48

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Solution

The fourth proportional to 31,913.32, 47,839.26 and 20,197.48 is: 30,276.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,913.32 : 47,839.26 = 20,197.48 : x
  2. Step 2: Convert to fraction form
    31,913.32/47,839.26 = 20,197.48/x
  3. Step 3: Cross multiply
    31,913.32x = 47,839.26 × 20,197.48
  4. Step 4: Simplify right side
    31,913.32x = 966,232,497.06
  5. Step 5: Solve for x
    x = 966,232,497.06/31,913.32
  6. Step 6: Final answer
    x = 30,276.78

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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.