Home / 13,449.11-18,558.74-7,479.82

Finding the Fourth Proportional to 13,449.11, 18,558.74 and 7,479.82

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Solution

The fourth proportional to 13,449.11, 18,558.74 and 7,479.82 is: 10,321.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.11 : 18,558.74 = 7,479.82 : x
  2. Step 2: Convert to fraction form
    13,449.11/18,558.74 = 7,479.82/x
  3. Step 3: Cross multiply
    13,449.11x = 18,558.74 × 7,479.82
  4. Step 4: Simplify right side
    13,449.11x = 138,816,006.93
  5. Step 5: Solve for x
    x = 138,816,006.93/13,449.11
  6. Step 6: Final answer
    x = 10,321.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.