Home / 28,419.44-39,218.91-15,672.31

Finding the Fourth Proportional to 28,419.44, 39,218.91 and 15,672.31

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Solution

The fourth proportional to 28,419.44, 39,218.91 and 15,672.31 is: 21,627.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.44 : 39,218.91 = 15,672.31 : x
  2. Step 2: Convert to fraction form
    28,419.44/39,218.91 = 15,672.31/x
  3. Step 3: Cross multiply
    28,419.44x = 39,218.91 × 15,672.31
  4. Step 4: Simplify right side
    28,419.44x = 614,650,912.95
  5. Step 5: Solve for x
    x = 614,650,912.95/28,419.44
  6. Step 6: Final answer
    x = 21,627.83

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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.