Home / 27,781.13-38,338.22-15,206.15

Finding the Fourth Proportional to 27,781.13, 38,338.22 and 15,206.15

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Solution

The fourth proportional to 27,781.13, 38,338.22 and 15,206.15 is: 20,984.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.13 : 38,338.22 = 15,206.15 : x
  2. Step 2: Convert to fraction form
    27,781.13/38,338.22 = 15,206.15/x
  3. Step 3: Cross multiply
    27,781.13x = 38,338.22 × 15,206.15
  4. Step 4: Simplify right side
    27,781.13x = 582,976,724.05
  5. Step 5: Solve for x
    x = 582,976,724.05/27,781.13
  6. Step 6: Final answer
    x = 20,984.63

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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.