Home / 13,081.27-18,052.11-7,112.95

Finding the Fourth Proportional to 13,081.27, 18,052.11 and 7,112.95

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Solution

The fourth proportional to 13,081.27, 18,052.11 and 7,112.95 is: 9,815.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.27 : 18,052.11 = 7,112.95 : x
  2. Step 2: Convert to fraction form
    13,081.27/18,052.11 = 7,112.95/x
  3. Step 3: Cross multiply
    13,081.27x = 18,052.11 × 7,112.95
  4. Step 4: Simplify right side
    13,081.27x = 128,403,755.82
  5. Step 5: Solve for x
    x = 128,403,755.82/13,081.27
  6. Step 6: Final answer
    x = 9,815.85

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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.