Home / 10,265.25-15,391.74-4,989.90

Finding the Fourth Proportional to 10,265.25, 15,391.74 and 4,989.90

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Solution

The fourth proportional to 10,265.25, 15,391.74 and 4,989.90 is: 7,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,265.25 : 15,391.74 = 4,989.90 : x
  2. Step 2: Convert to fraction form
    10,265.25/15,391.74 = 4,989.90/x
  3. Step 3: Cross multiply
    10,265.25x = 15,391.74 × 4,989.90
  4. Step 4: Simplify right side
    10,265.25x = 76,803,243.43
  5. Step 5: Solve for x
    x = 76,803,243.43/10,265.25
  6. Step 6: Final answer
    x = 7,481.87

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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.