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Finding the Fourth Proportional to 18,393.79, 27,571.55 and 8,524.95

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Solution

The fourth proportional to 18,393.79, 27,571.55 and 8,524.95 is: 12,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.79 : 27,571.55 = 8,524.95 : x
  2. Step 2: Convert to fraction form
    18,393.79/27,571.55 = 8,524.95/x
  3. Step 3: Cross multiply
    18,393.79x = 27,571.55 × 8,524.95
  4. Step 4: Simplify right side
    18,393.79x = 235,046,094.24
  5. Step 5: Solve for x
    x = 235,046,094.24/18,393.79
  6. Step 6: Final answer
    x = 12,778.56

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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.