Home / 13,081.23-18,052.11-7,112.88

Finding the Fourth Proportional to 13,081.23, 18,052.11 and 7,112.88

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Solution

The fourth proportional to 13,081.23, 18,052.11 and 7,112.88 is: 9,815.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,081.23 : 18,052.11 = 7,112.88 : x
  2. Step 2: Convert to fraction form
    13,081.23/18,052.11 = 7,112.88/x
  3. Step 3: Cross multiply
    13,081.23x = 18,052.11 × 7,112.88
  4. Step 4: Simplify right side
    13,081.23x = 128,402,492.18
  5. Step 5: Solve for x
    x = 128,402,492.18/13,081.23
  6. Step 6: Final answer
    x = 9,815.78

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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.