Home / 10,815.45-16,216.62-5,263.20

Finding the Fourth Proportional to 10,815.45, 16,216.62 and 5,263.20

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Solution

The fourth proportional to 10,815.45, 16,216.62 and 5,263.20 is: 7,891.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,815.45 : 16,216.62 = 5,263.20 : x
  2. Step 2: Convert to fraction form
    10,815.45/16,216.62 = 5,263.20/x
  3. Step 3: Cross multiply
    10,815.45x = 16,216.62 × 5,263.20
  4. Step 4: Simplify right side
    10,815.45x = 85,351,314.38
  5. Step 5: Solve for x
    x = 85,351,314.38/10,815.45
  6. Step 6: Final answer
    x = 7,891.61

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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.