Home / 15,778.29-21,773.96-8,608.07

Finding the Fourth Proportional to 15,778.29, 21,773.96 and 8,608.07

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Solution

The fourth proportional to 15,778.29, 21,773.96 and 8,608.07 is: 11,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,778.29 : 21,773.96 = 8,608.07 : x
  2. Step 2: Convert to fraction form
    15,778.29/21,773.96 = 8,608.07/x
  3. Step 3: Cross multiply
    15,778.29x = 21,773.96 × 8,608.07
  4. Step 4: Simplify right side
    15,778.29x = 187,431,863.95
  5. Step 5: Solve for x
    x = 187,431,863.95/15,778.29
  6. Step 6: Final answer
    x = 11,879.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.