Home / 21,082.60-31,623.90-7,937.92

Finding the Fourth Proportional to 21,082.60, 31,623.90 and 7,937.92

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Solution

The fourth proportional to 21,082.60, 31,623.90 and 7,937.92 is: 11,906.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,082.60 : 31,623.90 = 7,937.92 : x
  2. Step 2: Convert to fraction form
    21,082.60/31,623.90 = 7,937.92/x
  3. Step 3: Cross multiply
    21,082.60x = 31,623.90 × 7,937.92
  4. Step 4: Simplify right side
    21,082.60x = 251,027,988.29
  5. Step 5: Solve for x
    x = 251,027,988.29/21,082.60
  6. Step 6: Final answer
    x = 11,906.88

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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.