Home / 28,447.56-39,255.30-15,872.04

Finding the Fourth Proportional to 28,447.56, 39,255.30 and 15,872.04

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Solution

The fourth proportional to 28,447.56, 39,255.30 and 15,872.04 is: 21,902.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.56 : 39,255.30 = 15,872.04 : x
  2. Step 2: Convert to fraction form
    28,447.56/39,255.30 = 15,872.04/x
  3. Step 3: Cross multiply
    28,447.56x = 39,255.30 × 15,872.04
  4. Step 4: Simplify right side
    28,447.56x = 623,061,691.81
  5. Step 5: Solve for x
    x = 623,061,691.81/28,447.56
  6. Step 6: Final answer
    x = 21,902.11

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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.