Home / 20,542.31-28,348.31-11,110.87

Finding the Fourth Proportional to 20,542.31, 28,348.31 and 11,110.87

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Solution

The fourth proportional to 20,542.31, 28,348.31 and 11,110.87 is: 15,332.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,542.31 : 28,348.31 = 11,110.87 : x
  2. Step 2: Convert to fraction form
    20,542.31/28,348.31 = 11,110.87/x
  3. Step 3: Cross multiply
    20,542.31x = 28,348.31 × 11,110.87
  4. Step 4: Simplify right side
    20,542.31x = 314,974,450.34
  5. Step 5: Solve for x
    x = 314,974,450.34/20,542.31
  6. Step 6: Final answer
    x = 15,332.96

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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.