Home / 20,560.80-28,347.52-16,863.66

Finding the Fourth Proportional to 20,560.80, 28,347.52 and 16,863.66

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Solution

The fourth proportional to 20,560.80, 28,347.52 and 16,863.66 is: 23,250.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,560.80 : 28,347.52 = 16,863.66 : x
  2. Step 2: Convert to fraction form
    20,560.80/28,347.52 = 16,863.66/x
  3. Step 3: Cross multiply
    20,560.80x = 28,347.52 × 16,863.66
  4. Step 4: Simplify right side
    20,560.80x = 478,042,928.58
  5. Step 5: Solve for x
    x = 478,042,928.58/20,560.80
  6. Step 6: Final answer
    x = 23,250.21

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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.