Home / 20,731.62-31,123.44-16,622.82

Finding the Fourth Proportional to 20,731.62, 31,123.44 and 16,622.82

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Solution

The fourth proportional to 20,731.62, 31,123.44 and 16,622.82 is: 24,955.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.62 : 31,123.44 = 16,622.82 : x
  2. Step 2: Convert to fraction form
    20,731.62/31,123.44 = 16,622.82/x
  3. Step 3: Cross multiply
    20,731.62x = 31,123.44 × 16,622.82
  4. Step 4: Simplify right side
    20,731.62x = 517,359,340.90
  5. Step 5: Solve for x
    x = 517,359,340.90/20,731.62
  6. Step 6: Final answer
    x = 24,955.09

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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.