Home / 13,251.24-18,277.38-11,479.68

Finding the Fourth Proportional to 13,251.24, 18,277.38 and 11,479.68

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Solution

The fourth proportional to 13,251.24, 18,277.38 and 11,479.68 is: 15,833.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.24 : 18,277.38 = 11,479.68 : x
  2. Step 2: Convert to fraction form
    13,251.24/18,277.38 = 11,479.68/x
  3. Step 3: Cross multiply
    13,251.24x = 18,277.38 × 11,479.68
  4. Step 4: Simplify right side
    13,251.24x = 209,818,473.64
  5. Step 5: Solve for x
    x = 209,818,473.64/13,251.24
  6. Step 6: Final answer
    x = 15,833.87

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1.5x scale

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.