Home / 28,121.63-38,808.25-15,546.38

Finding the Fourth Proportional to 28,121.63, 38,808.25 and 15,546.38

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Solution

The fourth proportional to 28,121.63, 38,808.25 and 15,546.38 is: 21,454.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.63 : 38,808.25 = 15,546.38 : x
  2. Step 2: Convert to fraction form
    28,121.63/38,808.25 = 15,546.38/x
  3. Step 3: Cross multiply
    28,121.63x = 38,808.25 × 15,546.38
  4. Step 4: Simplify right side
    28,121.63x = 603,327,568.73
  5. Step 5: Solve for x
    x = 603,327,568.73/28,121.63
  6. Step 6: Final answer
    x = 21,454.22

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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.