Home / 10,211.46-15,317.69-2,815.75

Finding the Fourth Proportional to 10,211.46, 15,317.69 and 2,815.75

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Solution

The fourth proportional to 10,211.46, 15,317.69 and 2,815.75 is: 4,223.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,211.46 : 15,317.69 = 2,815.75 : x
  2. Step 2: Convert to fraction form
    10,211.46/15,317.69 = 2,815.75/x
  3. Step 3: Cross multiply
    10,211.46x = 15,317.69 × 2,815.75
  4. Step 4: Simplify right side
    10,211.46x = 43,130,785.62
  5. Step 5: Solve for x
    x = 43,130,785.62/10,211.46
  6. Step 6: Final answer
    x = 4,223.76

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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.