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Finding the Fourth Proportional to 18,612.15, 27,902.54 and 8,074.25

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Solution

The fourth proportional to 18,612.15, 27,902.54 and 8,074.25 is: 12,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.15 : 27,902.54 = 8,074.25 : x
  2. Step 2: Convert to fraction form
    18,612.15/27,902.54 = 8,074.25/x
  3. Step 3: Cross multiply
    18,612.15x = 27,902.54 × 8,074.25
  4. Step 4: Simplify right side
    18,612.15x = 225,291,903.71
  5. Step 5: Solve for x
    x = 225,291,903.71/18,612.15
  6. Step 6: Final answer
    x = 12,104.56

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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.