Home / 10,419.62-15,634.40-4,872.15

Finding the Fourth Proportional to 10,419.62, 15,634.40 and 4,872.15

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Solution

The fourth proportional to 10,419.62, 15,634.40 and 4,872.15 is: 7,310.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.62 : 15,634.40 = 4,872.15 : x
  2. Step 2: Convert to fraction form
    10,419.62/15,634.40 = 4,872.15/x
  3. Step 3: Cross multiply
    10,419.62x = 15,634.40 × 4,872.15
  4. Step 4: Simplify right side
    10,419.62x = 76,173,141.96
  5. Step 5: Solve for x
    x = 76,173,141.96/10,419.62
  6. Step 6: Final answer
    x = 7,310.55

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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.