Home / 18,445.18-27,678.75-6,759.22

Finding the Fourth Proportional to 18,445.18, 27,678.75 and 6,759.22

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Solution

The fourth proportional to 18,445.18, 27,678.75 and 6,759.22 is: 10,142.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,445.18 : 27,678.75 = 6,759.22 : x
  2. Step 2: Convert to fraction form
    18,445.18/27,678.75 = 6,759.22/x
  3. Step 3: Cross multiply
    18,445.18x = 27,678.75 × 6,759.22
  4. Step 4: Simplify right side
    18,445.18x = 187,086,760.58
  5. Step 5: Solve for x
    x = 187,086,760.58/18,445.18
  6. Step 6: Final answer
    x = 10,142.85

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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.