Home / 13,091.28-18,065.42-7,122.97

Finding the Fourth Proportional to 13,091.28, 18,065.42 and 7,122.97

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Solution

The fourth proportional to 13,091.28, 18,065.42 and 7,122.97 is: 9,829.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.28 : 18,065.42 = 7,122.97 : x
  2. Step 2: Convert to fraction form
    13,091.28/18,065.42 = 7,122.97/x
  3. Step 3: Cross multiply
    13,091.28x = 18,065.42 × 7,122.97
  4. Step 4: Simplify right side
    13,091.28x = 128,679,458.38
  5. Step 5: Solve for x
    x = 128,679,458.38/13,091.28
  6. Step 6: Final answer
    x = 9,829.41

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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.