Home / 13,081.30-18,052.10-7,112.97

Finding the Fourth Proportional to 13,081.30, 18,052.10 and 7,112.97

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Solution

The fourth proportional to 13,081.30, 18,052.10 and 7,112.97 is: 9,815.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.30 : 18,052.10 = 7,112.97 : x
  2. Step 2: Convert to fraction form
    13,081.30/18,052.10 = 7,112.97/x
  3. Step 3: Cross multiply
    13,081.30x = 18,052.10 × 7,112.97
  4. Step 4: Simplify right side
    13,081.30x = 128,403,976.32
  5. Step 5: Solve for x
    x = 128,403,976.32/13,081.30
  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.