Home / 20,248.89-27,945.90-11,865.39

Finding the Fourth Proportional to 20,248.89, 27,945.90 and 11,865.39

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Solution

The fourth proportional to 20,248.89, 27,945.90 and 11,865.39 is: 16,375.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,248.89 : 27,945.90 = 11,865.39 : x
  2. Step 2: Convert to fraction form
    20,248.89/27,945.90 = 11,865.39/x
  3. Step 3: Cross multiply
    20,248.89x = 27,945.90 × 11,865.39
  4. Step 4: Simplify right side
    20,248.89x = 331,589,002.40
  5. Step 5: Solve for x
    x = 331,589,002.40/20,248.89
  6. Step 6: Final answer
    x = 16,375.66

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1.5x scale

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.