Home / 10,299.90-15,449.67-3,279.81

Finding the Fourth Proportional to 10,299.90, 15,449.67 and 3,279.81

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Solution

The fourth proportional to 10,299.90, 15,449.67 and 3,279.81 is: 4,919.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,299.90 : 15,449.67 = 3,279.81 : x
  2. Step 2: Convert to fraction form
    10,299.90/15,449.67 = 3,279.81/x
  3. Step 3: Cross multiply
    10,299.90x = 15,449.67 × 3,279.81
  4. Step 4: Simplify right side
    10,299.90x = 50,671,982.16
  5. Step 5: Solve for x
    x = 50,671,982.16/10,299.90
  6. Step 6: Final answer
    x = 4,919.66

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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.