Home / 27,219.87-37,565.29-15,121.81

Finding the Fourth Proportional to 27,219.87, 37,565.29 and 15,121.81

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Solution

The fourth proportional to 27,219.87, 37,565.29 and 15,121.81 is: 20,869.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,219.87 : 37,565.29 = 15,121.81 : x
  2. Step 2: Convert to fraction form
    27,219.87/37,565.29 = 15,121.81/x
  3. Step 3: Cross multiply
    27,219.87x = 37,565.29 × 15,121.81
  4. Step 4: Simplify right side
    27,219.87x = 568,055,392.02
  5. Step 5: Solve for x
    x = 568,055,392.02/27,219.87
  6. Step 6: Final answer
    x = 20,869.14

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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.