Home / 28,168.15-38,872.06-15,422.16

Finding the Fourth Proportional to 28,168.15, 38,872.06 and 15,422.16

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Solution

The fourth proportional to 28,168.15, 38,872.06 and 15,422.16 is: 21,282.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,168.15 : 38,872.06 = 15,422.16 : x
  2. Step 2: Convert to fraction form
    28,168.15/38,872.06 = 15,422.16/x
  3. Step 3: Cross multiply
    28,168.15x = 38,872.06 × 15,422.16
  4. Step 4: Simplify right side
    28,168.15x = 599,491,115.45
  5. Step 5: Solve for x
    x = 599,491,115.45/28,168.15
  6. Step 6: Final answer
    x = 21,282.59

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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.