Home / 28,414.44-39,209.30-15,665.44

Finding the Fourth Proportional to 28,414.44, 39,209.30 and 15,665.44

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Solution

The fourth proportional to 28,414.44, 39,209.30 and 15,665.44 is: 21,616.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,414.44 : 39,209.30 = 15,665.44 : x
  2. Step 2: Convert to fraction form
    28,414.44/39,209.30 = 15,665.44/x
  3. Step 3: Cross multiply
    28,414.44x = 39,209.30 × 15,665.44
  4. Step 4: Simplify right side
    28,414.44x = 614,230,936.59
  5. Step 5: Solve for x
    x = 614,230,936.59/28,414.44
  6. Step 6: Final answer
    x = 21,616.86

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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.