Home / 28,169.55-38,874.06-15,422.85

Finding the Fourth Proportional to 28,169.55, 38,874.06 and 15,422.85

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Solution

The fourth proportional to 28,169.55, 38,874.06 and 15,422.85 is: 21,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,169.55 : 38,874.06 = 15,422.85 : x
  2. Step 2: Convert to fraction form
    28,169.55/38,874.06 = 15,422.85/x
  3. Step 3: Cross multiply
    28,169.55x = 38,874.06 × 15,422.85
  4. Step 4: Simplify right side
    28,169.55x = 599,548,796.27
  5. Step 5: Solve for x
    x = 599,548,796.27/28,169.55
  6. Step 6: Final answer
    x = 21,283.58

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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.