Home / 21,229.02-31,843.84-8,082.12

Finding the Fourth Proportional to 21,229.02, 31,843.84 and 8,082.12

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Solution

The fourth proportional to 21,229.02, 31,843.84 and 8,082.12 is: 12,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.02 : 31,843.84 = 8,082.12 : x
  2. Step 2: Convert to fraction form
    21,229.02/31,843.84 = 8,082.12/x
  3. Step 3: Cross multiply
    21,229.02x = 31,843.84 × 8,082.12
  4. Step 4: Simplify right side
    21,229.02x = 257,365,626.83
  5. Step 5: Solve for x
    x = 257,365,626.83/21,229.02
  6. Step 6: Final answer
    x = 12,123.29

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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.