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Finding the Fourth Proportional to 27,269.28, 40,899.12 and 7,279.02

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Solution

The fourth proportional to 27,269.28, 40,899.12 and 7,279.02 is: 10,917.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,269.28 : 40,899.12 = 7,279.02 : x
  2. Step 2: Convert to fraction form
    27,269.28/40,899.12 = 7,279.02/x
  3. Step 3: Cross multiply
    27,269.28x = 40,899.12 × 7,279.02
  4. Step 4: Simplify right side
    27,269.28x = 297,705,512.46
  5. Step 5: Solve for x
    x = 297,705,512.46/27,269.28
  6. Step 6: Final answer
    x = 10,917.25

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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.