Home / 20,914.10-28,862.61-11,961.98

Finding the Fourth Proportional to 20,914.10, 28,862.61 and 11,961.98

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Solution

The fourth proportional to 20,914.10, 28,862.61 and 11,961.98 is: 16,508.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.10 : 28,862.61 = 11,961.98 : x
  2. Step 2: Convert to fraction form
    20,914.10/28,862.61 = 11,961.98/x
  3. Step 3: Cross multiply
    20,914.10x = 28,862.61 × 11,961.98
  4. Step 4: Simplify right side
    20,914.10x = 345,253,963.57
  5. Step 5: Solve for x
    x = 345,253,963.57/20,914.10
  6. Step 6: Final answer
    x = 16,508.19

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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.