Home / 10,211.26-15,317.66-2,815.65

Finding the Fourth Proportional to 10,211.26, 15,317.66 and 2,815.65

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Solution

The fourth proportional to 10,211.26, 15,317.66 and 2,815.65 is: 4,223.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,211.26 : 15,317.66 = 2,815.65 : x
  2. Step 2: Convert to fraction form
    10,211.26/15,317.66 = 2,815.65/x
  3. Step 3: Cross multiply
    10,211.26x = 15,317.66 × 2,815.65
  4. Step 4: Simplify right side
    10,211.26x = 43,129,155.30
  5. Step 5: Solve for x
    x = 43,129,155.30/10,211.26
  6. Step 6: Final answer
    x = 4,223.69

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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.