Home / 28,375.68-39,147.78-16,434.66

Finding the Fourth Proportional to 28,375.68, 39,147.78 and 16,434.66

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Solution

The fourth proportional to 28,375.68, 39,147.78 and 16,434.66 is: 22,673.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.68 : 39,147.78 = 16,434.66 : x
  2. Step 2: Convert to fraction form
    28,375.68/39,147.78 = 16,434.66/x
  3. Step 3: Cross multiply
    28,375.68x = 39,147.78 × 16,434.66
  4. Step 4: Simplify right side
    28,375.68x = 643,380,454.05
  5. Step 5: Solve for x
    x = 643,380,454.05/28,375.68
  6. Step 6: Final answer
    x = 22,673.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.