Home / 18,645.20-27,920.07-10,315.97

Finding the Fourth Proportional to 18,645.20, 27,920.07 and 10,315.97

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Solution

The fourth proportional to 18,645.20, 27,920.07 and 10,315.97 is: 15,447.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.20 : 27,920.07 = 10,315.97 : x
  2. Step 2: Convert to fraction form
    18,645.20/27,920.07 = 10,315.97/x
  3. Step 3: Cross multiply
    18,645.20x = 27,920.07 × 10,315.97
  4. Step 4: Simplify right side
    18,645.20x = 288,022,464.92
  5. Step 5: Solve for x
    x = 288,022,464.92/18,645.20
  6. Step 6: Final answer
    x = 15,447.54

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1.5x scale

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.