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Finding the Fourth Proportional to 18,571.50, 27,854.01 and 8,575.40

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Solution

The fourth proportional to 18,571.50, 27,854.01 and 8,575.40 is: 12,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,571.50 : 27,854.01 = 8,575.40 : x
  2. Step 2: Convert to fraction form
    18,571.50/27,854.01 = 8,575.40/x
  3. Step 3: Cross multiply
    18,571.50x = 27,854.01 × 8,575.40
  4. Step 4: Simplify right side
    18,571.50x = 238,859,170.24
  5. Step 5: Solve for x
    x = 238,859,170.24/18,571.50
  6. Step 6: Final answer
    x = 12,861.60

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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.