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Finding the Fourth Proportional to 31,753.64, 47,620.73 and 21,955.88

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Solution

The fourth proportional to 31,753.64, 47,620.73 and 21,955.88 is: 32,927.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,753.64 : 47,620.73 = 21,955.88 : x
  2. Step 2: Convert to fraction form
    31,753.64/47,620.73 = 21,955.88/x
  3. Step 3: Cross multiply
    31,753.64x = 47,620.73 × 21,955.88
  4. Step 4: Simplify right side
    31,753.64x = 1,045,554,815.97
  5. Step 5: Solve for x
    x = 1,045,554,815.97/31,753.64
  6. Step 6: Final answer
    x = 32,927.09

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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.