Home / 28,419.43-39,217.22-15,672.19

Finding the Fourth Proportional to 28,419.43, 39,217.22 and 15,672.19

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Solution

The fourth proportional to 28,419.43, 39,217.22 and 15,672.19 is: 21,626.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,419.43 : 39,217.22 = 15,672.19 : x
  2. Step 2: Convert to fraction form
    28,419.43/39,217.22 = 15,672.19/x
  3. Step 3: Cross multiply
    28,419.43x = 39,217.22 × 15,672.19
  4. Step 4: Simplify right side
    28,419.43x = 614,619,644.75
  5. Step 5: Solve for x
    x = 614,619,644.75/28,419.43
  6. Step 6: Final answer
    x = 21,626.74

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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.