Home / 31,517.17-43,485.05-21,946.30

Finding the Fourth Proportional to 31,517.17, 43,485.05 and 21,946.30

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Solution

The fourth proportional to 31,517.17, 43,485.05 and 21,946.30 is: 30,279.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,517.17 : 43,485.05 = 21,946.30 : x
  2. Step 2: Convert to fraction form
    31,517.17/43,485.05 = 21,946.30/x
  3. Step 3: Cross multiply
    31,517.17x = 43,485.05 × 21,946.30
  4. Step 4: Simplify right side
    31,517.17x = 954,335,898.97
  5. Step 5: Solve for x
    x = 954,335,898.97/31,517.17
  6. Step 6: Final answer
    x = 30,279.88

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1.5x scale

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.