Home / 20,876.56-28,790.10-16,641.68

Finding the Fourth Proportional to 20,876.56, 28,790.10 and 16,641.68

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Solution

The fourth proportional to 20,876.56, 28,790.10 and 16,641.68 is: 22,949.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.56 : 28,790.10 = 16,641.68 : x
  2. Step 2: Convert to fraction form
    20,876.56/28,790.10 = 16,641.68/x
  3. Step 3: Cross multiply
    20,876.56x = 28,790.10 × 16,641.68
  4. Step 4: Simplify right side
    20,876.56x = 479,115,487.42
  5. Step 5: Solve for x
    x = 479,115,487.42/20,876.56
  6. Step 6: Final answer
    x = 22,949.93

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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.