Home / 13,499.11-20,226.79-10,218.61

Finding the Fourth Proportional to 13,499.11, 20,226.79 and 10,218.61

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Solution

The fourth proportional to 13,499.11, 20,226.79 and 10,218.61 is: 15,311.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,499.11 : 20,226.79 = 10,218.61 : x
  2. Step 2: Convert to fraction form
    13,499.11/20,226.79 = 10,218.61/x
  3. Step 3: Cross multiply
    13,499.11x = 20,226.79 × 10,218.61
  4. Step 4: Simplify right side
    13,499.11x = 206,689,574.10
  5. Step 5: Solve for x
    x = 206,689,574.10/13,499.11
  6. Step 6: Final answer
    x = 15,311.35

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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.