Home / 28,375.68-39,150.72-17,189.76

Finding the Fourth Proportional to 28,375.68, 39,150.72 and 17,189.76

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Solution

The fourth proportional to 28,375.68, 39,150.72 and 17,189.76 is: 23,717.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.68 : 39,150.72 = 17,189.76 : x
  2. Step 2: Convert to fraction form
    28,375.68/39,150.72 = 17,189.76/x
  3. Step 3: Cross multiply
    28,375.68x = 39,150.72 × 17,189.76
  4. Step 4: Simplify right side
    28,375.68x = 672,991,480.63
  5. Step 5: Solve for x
    x = 672,991,480.63/28,375.68
  6. Step 6: Final answer
    x = 23,717.19

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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.