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Finding the Fourth Proportional to 18,125.22, 27,176.90 and 8,128.16

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Solution

The fourth proportional to 18,125.22, 27,176.90 and 8,128.16 is: 12,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125.22 : 27,176.90 = 8,128.16 : x
  2. Step 2: Convert to fraction form
    18,125.22/27,176.90 = 8,128.16/x
  3. Step 3: Cross multiply
    18,125.22x = 27,176.90 × 8,128.16
  4. Step 4: Simplify right side
    18,125.22x = 220,898,191.50
  5. Step 5: Solve for x
    x = 220,898,191.50/18,125.22
  6. Step 6: Final answer
    x = 12,187.34

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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.