Home / 28,691.89-43,040.32-7,915.39

Finding the Fourth Proportional to 28,691.89, 43,040.32 and 7,915.39

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Solution

The fourth proportional to 28,691.89, 43,040.32 and 7,915.39 is: 11,873.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.89 : 43,040.32 = 7,915.39 : x
  2. Step 2: Convert to fraction form
    28,691.89/43,040.32 = 7,915.39/x
  3. Step 3: Cross multiply
    28,691.89x = 43,040.32 × 7,915.39
  4. Step 4: Simplify right side
    28,691.89x = 340,680,942.64
  5. Step 5: Solve for x
    x = 340,680,942.64/28,691.89
  6. Step 6: Final answer
    x = 11,873.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.