Home / 20,932.50-28,887.06-11,501.27

Finding the Fourth Proportional to 20,932.50, 28,887.06 and 11,501.27

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Solution

The fourth proportional to 20,932.50, 28,887.06 and 11,501.27 is: 15,871.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.50 : 28,887.06 = 11,501.27 : x
  2. Step 2: Convert to fraction form
    20,932.50/28,887.06 = 11,501.27/x
  3. Step 3: Cross multiply
    20,932.50x = 28,887.06 × 11,501.27
  4. Step 4: Simplify right side
    20,932.50x = 332,237,732.13
  5. Step 5: Solve for x
    x = 332,237,732.13/20,932.50
  6. Step 6: Final answer
    x = 15,871.86

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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.