Home / 20,887.11-31,331.52-5,305.14

Finding the Fourth Proportional to 20,887.11, 31,331.52 and 5,305.14

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Solution

The fourth proportional to 20,887.11, 31,331.52 and 5,305.14 is: 7,957.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.11 : 31,331.52 = 5,305.14 : x
  2. Step 2: Convert to fraction form
    20,887.11/31,331.52 = 5,305.14/x
  3. Step 3: Cross multiply
    20,887.11x = 31,331.52 × 5,305.14
  4. Step 4: Simplify right side
    20,887.11x = 166,218,100.01
  5. Step 5: Solve for x
    x = 166,218,100.01/20,887.11
  6. Step 6: Final answer
    x = 7,957.93

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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.