Home / 20,974.28-31,472.42-13,576.82

Finding the Fourth Proportional to 20,974.28, 31,472.42 and 13,576.82

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Solution

The fourth proportional to 20,974.28, 31,472.42 and 13,576.82 is: 20,372.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.28 : 31,472.42 = 13,576.82 : x
  2. Step 2: Convert to fraction form
    20,974.28/31,472.42 = 13,576.82/x
  3. Step 3: Cross multiply
    20,974.28x = 31,472.42 × 13,576.82
  4. Step 4: Simplify right side
    20,974.28x = 427,295,156.06
  5. Step 5: Solve for x
    x = 427,295,156.06/20,974.28
  6. Step 6: Final answer
    x = 20,372.34

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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.