Home / 11,305.94-15,587.85-8,079.61

Finding the Fourth Proportional to 11,305.94, 15,587.85 and 8,079.61

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Solution

The fourth proportional to 11,305.94, 15,587.85 and 8,079.61 is: 11,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,305.94 : 15,587.85 = 8,079.61 : x
  2. Step 2: Convert to fraction form
    11,305.94/15,587.85 = 8,079.61/x
  3. Step 3: Cross multiply
    11,305.94x = 15,587.85 × 8,079.61
  4. Step 4: Simplify right side
    11,305.94x = 125,943,755.77
  5. Step 5: Solve for x
    x = 125,943,755.77/11,305.94
  6. Step 6: Final answer
    x = 11,139.61

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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.