Home / 21,181.97-31,773.18-6,391.02

Finding the Fourth Proportional to 21,181.97, 31,773.18 and 6,391.02

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Solution

The fourth proportional to 21,181.97, 31,773.18 and 6,391.02 is: 9,586.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,181.97 : 31,773.18 = 6,391.02 : x
  2. Step 2: Convert to fraction form
    21,181.97/31,773.18 = 6,391.02/x
  3. Step 3: Cross multiply
    21,181.97x = 31,773.18 × 6,391.02
  4. Step 4: Simplify right side
    21,181.97x = 203,063,028.84
  5. Step 5: Solve for x
    x = 203,063,028.84/21,181.97
  6. Step 6: Final answer
    x = 9,586.60

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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.