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Finding the Fourth Proportional to 27,279.80, 40,910.10 and 9,750.20

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Solution

The fourth proportional to 27,279.80, 40,910.10 and 9,750.20 is: 14,621.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,279.80 : 40,910.10 = 9,750.20 : x
  2. Step 2: Convert to fraction form
    27,279.80/40,910.10 = 9,750.20/x
  3. Step 3: Cross multiply
    27,279.80x = 40,910.10 × 9,750.20
  4. Step 4: Simplify right side
    27,279.80x = 398,881,657.02
  5. Step 5: Solve for x
    x = 398,881,657.02/27,279.80
  6. Step 6: Final answer
    x = 14,621.87

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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.