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Finding the Fourth Proportional to 27,309.55, 40,964.29 and 8,591.21

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Solution

The fourth proportional to 27,309.55, 40,964.29 and 8,591.21 is: 12,886.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,309.55 : 40,964.29 = 8,591.21 : x
  2. Step 2: Convert to fraction form
    27,309.55/40,964.29 = 8,591.21/x
  3. Step 3: Cross multiply
    27,309.55x = 40,964.29 × 8,591.21
  4. Step 4: Simplify right side
    27,309.55x = 351,932,817.89
  5. Step 5: Solve for x
    x = 351,932,817.89/27,309.55
  6. Step 6: Final answer
    x = 12,886.80

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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.