Home / 20,974.16-31,472.21-8,495.51

Finding the Fourth Proportional to 20,974.16, 31,472.21 and 8,495.51

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Solution

The fourth proportional to 20,974.16, 31,472.21 and 8,495.51 is: 12,747.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,974.16 : 31,472.21 = 8,495.51 : x
  2. Step 2: Convert to fraction form
    20,974.16/31,472.21 = 8,495.51/x
  3. Step 3: Cross multiply
    20,974.16x = 31,472.21 × 8,495.51
  4. Step 4: Simplify right side
    20,974.16x = 267,372,338.65
  5. Step 5: Solve for x
    x = 267,372,338.65/20,974.16
  6. Step 6: Final answer
    x = 12,747.70

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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.