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Finding the Fourth Proportional to 13,091.28, 18,066.92 and 7,502.28

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Solution

The fourth proportional to 13,091.28, 18,066.92 and 7,502.28 is: 10,353.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,091.28 : 18,066.92 = 7,502.28 : x
  2. Step 2: Convert to fraction form
    13,091.28/18,066.92 = 7,502.28/x
  3. Step 3: Cross multiply
    13,091.28x = 18,066.92 × 7,502.28
  4. Step 4: Simplify right side
    13,091.28x = 135,543,092.58
  5. Step 5: Solve for x
    x = 135,543,092.58/13,091.28
  6. Step 6: Final answer
    x = 10,353.69

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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.