Home / 27,881.20-38,468.55-15,942.07

Finding the Fourth Proportional to 27,881.20, 38,468.55 and 15,942.07

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Solution

The fourth proportional to 27,881.20, 38,468.55 and 15,942.07 is: 21,995.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,881.20 : 38,468.55 = 15,942.07 : x
  2. Step 2: Convert to fraction form
    27,881.20/38,468.55 = 15,942.07/x
  3. Step 3: Cross multiply
    27,881.20x = 38,468.55 × 15,942.07
  4. Step 4: Simplify right side
    27,881.20x = 613,268,316.90
  5. Step 5: Solve for x
    x = 613,268,316.90/27,881.20
  6. Step 6: Final answer
    x = 21,995.76

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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.