Home / 21,917.66-32,876.15-20,516.76

Finding the Fourth Proportional to 21,917.66, 32,876.15 and 20,516.76

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Solution

The fourth proportional to 21,917.66, 32,876.15 and 20,516.76 is: 30,774.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.66 : 32,876.15 = 20,516.76 : x
  2. Step 2: Convert to fraction form
    21,917.66/32,876.15 = 20,516.76/x
  3. Step 3: Cross multiply
    21,917.66x = 32,876.15 × 20,516.76
  4. Step 4: Simplify right side
    21,917.66x = 674,511,976.69
  5. Step 5: Solve for x
    x = 674,511,976.69/21,917.66
  6. Step 6: Final answer
    x = 30,774.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.