Home / 10,286.70-15,440.19-7,328.43

Finding the Fourth Proportional to 10,286.70, 15,440.19 and 7,328.43

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Solution

The fourth proportional to 10,286.70, 15,440.19 and 7,328.43 is: 10,999.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,286.70 : 15,440.19 = 7,328.43 : x
  2. Step 2: Convert to fraction form
    10,286.70/15,440.19 = 7,328.43/x
  3. Step 3: Cross multiply
    10,286.70x = 15,440.19 × 7,328.43
  4. Step 4: Simplify right side
    10,286.70x = 113,152,351.60
  5. Step 5: Solve for x
    x = 113,152,351.60/10,286.70
  6. Step 6: Final answer
    x = 10,999.87

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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.