Home / 21,229.22-31,844.12-8,082.32

Finding the Fourth Proportional to 21,229.22, 31,844.12 and 8,082.32

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Solution

The fourth proportional to 21,229.22, 31,844.12 and 8,082.32 is: 12,123.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.22 : 31,844.12 = 8,082.32 : x
  2. Step 2: Convert to fraction form
    21,229.22/31,844.12 = 8,082.32/x
  3. Step 3: Cross multiply
    21,229.22x = 31,844.12 × 8,082.32
  4. Step 4: Simplify right side
    21,229.22x = 257,374,168.33
  5. Step 5: Solve for x
    x = 257,374,168.33/21,229.22
  6. Step 6: Final answer
    x = 12,123.58

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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.