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Finding the Fourth Proportional to 14,004.31, 20,971.87 and 10,437.88

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Solution

The fourth proportional to 14,004.31, 20,971.87 and 10,437.88 is: 15,631.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,004.31 : 20,971.87 = 10,437.88 : x
  2. Step 2: Convert to fraction form
    14,004.31/20,971.87 = 10,437.88/x
  3. Step 3: Cross multiply
    14,004.31x = 20,971.87 × 10,437.88
  4. Step 4: Simplify right side
    14,004.31x = 218,901,862.44
  5. Step 5: Solve for x
    x = 218,901,862.44/14,004.31
  6. Step 6: Final answer
    x = 15,631.04

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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.