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Finding the Fourth Proportional to 27,179.42, 40,769.15 and 7,458.12

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Solution

The fourth proportional to 27,179.42, 40,769.15 and 7,458.12 is: 11,187.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,179.42 : 40,769.15 = 7,458.12 : x
  2. Step 2: Convert to fraction form
    27,179.42/40,769.15 = 7,458.12/x
  3. Step 3: Cross multiply
    27,179.42x = 40,769.15 × 7,458.12
  4. Step 4: Simplify right side
    27,179.42x = 304,061,175.71
  5. Step 5: Solve for x
    x = 304,061,175.71/27,179.42
  6. Step 6: Final answer
    x = 11,187.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.