Home / 21,251.16-31,887.72-9,561.96

Finding the Fourth Proportional to 21,251.16, 31,887.72 and 9,561.96

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Solution

The fourth proportional to 21,251.16, 31,887.72 and 9,561.96 is: 14,347.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.16 : 31,887.72 = 9,561.96 : x
  2. Step 2: Convert to fraction form
    21,251.16/31,887.72 = 9,561.96/x
  3. Step 3: Cross multiply
    21,251.16x = 31,887.72 × 9,561.96
  4. Step 4: Simplify right side
    21,251.16x = 304,909,103.13
  5. Step 5: Solve for x
    x = 304,909,103.13/21,251.16
  6. Step 6: Final answer
    x = 14,347.88

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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.