Home / 28,418.54-39,216.68-15,672.26

Finding the Fourth Proportional to 28,418.54, 39,216.68 and 15,672.26

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Solution

The fourth proportional to 28,418.54, 39,216.68 and 15,672.26 is: 21,627.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.54 : 39,216.68 = 15,672.26 : x
  2. Step 2: Convert to fraction form
    28,418.54/39,216.68 = 15,672.26/x
  3. Step 3: Cross multiply
    28,418.54x = 39,216.68 × 15,672.26
  4. Step 4: Simplify right side
    28,418.54x = 614,613,789.62
  5. Step 5: Solve for x
    x = 614,613,789.62/28,418.54
  6. Step 6: Final answer
    x = 21,627.21

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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.