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Finding the Fourth Proportional to 27,189.40, 40,781.46 and 7,470.88

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Solution

The fourth proportional to 27,189.40, 40,781.46 and 7,470.88 is: 11,205.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,189.40 : 40,781.46 = 7,470.88 : x
  2. Step 2: Convert to fraction form
    27,189.40/40,781.46 = 7,470.88/x
  3. Step 3: Cross multiply
    27,189.40x = 40,781.46 × 7,470.88
  4. Step 4: Simplify right side
    27,189.40x = 304,673,393.88
  5. Step 5: Solve for x
    x = 304,673,393.88/27,189.40
  6. Step 6: Final answer
    x = 11,205.59

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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.