Home / 13,091.11-18,065.91-7,122.85

Finding the Fourth Proportional to 13,091.11, 18,065.91 and 7,122.85

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Solution

The fourth proportional to 13,091.11, 18,065.91 and 7,122.85 is: 9,829.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.11 : 18,065.91 = 7,122.85 : x
  2. Step 2: Convert to fraction form
    13,091.11/18,065.91 = 7,122.85/x
  3. Step 3: Cross multiply
    13,091.11x = 18,065.91 × 7,122.85
  4. Step 4: Simplify right side
    13,091.11x = 128,680,767.04
  5. Step 5: Solve for x
    x = 128,680,767.04/13,091.11
  6. Step 6: Final answer
    x = 9,829.63

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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.