Home / 11,331.95-15,645.71-8,674.61

Finding the Fourth Proportional to 11,331.95, 15,645.71 and 8,674.61

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Solution

The fourth proportional to 11,331.95, 15,645.71 and 8,674.61 is: 11,976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.95 : 15,645.71 = 8,674.61 : x
  2. Step 2: Convert to fraction form
    11,331.95/15,645.71 = 8,674.61/x
  3. Step 3: Cross multiply
    11,331.95x = 15,645.71 × 8,674.61
  4. Step 4: Simplify right side
    11,331.95x = 135,720,389.05
  5. Step 5: Solve for x
    x = 135,720,389.05/11,331.95
  6. Step 6: Final answer
    x = 11,976.79

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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.