Home / 20,757.22-31,123.86-14,191.36

Finding the Fourth Proportional to 20,757.22, 31,123.86 and 14,191.36

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Solution

The fourth proportional to 20,757.22, 31,123.86 and 14,191.36 is: 21,278.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,757.22 : 31,123.86 = 14,191.36 : x
  2. Step 2: Convert to fraction form
    20,757.22/31,123.86 = 14,191.36/x
  3. Step 3: Cross multiply
    20,757.22x = 31,123.86 × 14,191.36
  4. Step 4: Simplify right side
    20,757.22x = 441,689,901.85
  5. Step 5: Solve for x
    x = 441,689,901.85/20,757.22
  6. Step 6: Final answer
    x = 21,278.86

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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.