Home / 27,512.30-37,984.61-18,912.78

Finding the Fourth Proportional to 27,512.30, 37,984.61 and 18,912.78

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Solution

The fourth proportional to 27,512.30, 37,984.61 and 18,912.78 is: 26,111.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,512.30 : 37,984.61 = 18,912.78 : x
  2. Step 2: Convert to fraction form
    27,512.30/37,984.61 = 18,912.78/x
  3. Step 3: Cross multiply
    27,512.30x = 37,984.61 × 18,912.78
  4. Step 4: Simplify right side
    27,512.30x = 718,394,572.32
  5. Step 5: Solve for x
    x = 718,394,572.32/27,512.30
  6. Step 6: Final answer
    x = 26,111.76

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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.