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Finding the Fourth Proportional to 18,125.22, 27,187 and 6,438.26

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Solution

The fourth proportional to 18,125.22, 27,187 and 6,438.26 is: 9,657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,125.22 : 27,187 = 6,438.26 : x
  2. Step 2: Convert to fraction form
    18,125.22/27,187 = 6,438.26/x
  3. Step 3: Cross multiply
    18,125.22x = 27,187 × 6,438.26
  4. Step 4: Simplify right side
    18,125.22x = 175,036,974.62
  5. Step 5: Solve for x
    x = 175,036,974.62/18,125.22
  6. Step 6: Final answer
    x = 9,657.10

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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.