Home / 28,029.62-38,679.90-15,454.28

Finding the Fourth Proportional to 28,029.62, 38,679.90 and 15,454.28

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Solution

The fourth proportional to 28,029.62, 38,679.90 and 15,454.28 is: 21,326.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,029.62 : 38,679.90 = 15,454.28 : x
  2. Step 2: Convert to fraction form
    28,029.62/38,679.90 = 15,454.28/x
  3. Step 3: Cross multiply
    28,029.62x = 38,679.90 × 15,454.28
  4. Step 4: Simplify right side
    28,029.62x = 597,770,004.97
  5. Step 5: Solve for x
    x = 597,770,004.97/28,029.62
  6. Step 6: Final answer
    x = 21,326.37

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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.