Home / 18,589.50-27,878.78-5,438.75

Finding the Fourth Proportional to 18,589.50, 27,878.78 and 5,438.75

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Solution

The fourth proportional to 18,589.50, 27,878.78 and 5,438.75 is: 8,156.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.50 : 27,878.78 = 5,438.75 : x
  2. Step 2: Convert to fraction form
    18,589.50/27,878.78 = 5,438.75/x
  3. Step 3: Cross multiply
    18,589.50x = 27,878.78 × 5,438.75
  4. Step 4: Simplify right side
    18,589.50x = 151,625,588.93
  5. Step 5: Solve for x
    x = 151,625,588.93/18,589.50
  6. Step 6: Final answer
    x = 8,156.52

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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.