Home / 21,182.09-31,773.35-6,391.13

Finding the Fourth Proportional to 21,182.09, 31,773.35 and 6,391.13

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Solution

The fourth proportional to 21,182.09, 31,773.35 and 6,391.13 is: 9,586.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,182.09 : 31,773.35 = 6,391.13 : x
  2. Step 2: Convert to fraction form
    21,182.09/31,773.35 = 6,391.13/x
  3. Step 3: Cross multiply
    21,182.09x = 31,773.35 × 6,391.13
  4. Step 4: Simplify right side
    21,182.09x = 203,067,705.80
  5. Step 5: Solve for x
    x = 203,067,705.80/21,182.09
  6. Step 6: Final answer
    x = 9,586.77

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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.