Home / 27,696.24-38,220.66-15,120.90

Finding the Fourth Proportional to 27,696.24, 38,220.66 and 15,120.90

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Solution

The fourth proportional to 27,696.24, 38,220.66 and 15,120.90 is: 20,866.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,696.24 : 38,220.66 = 15,120.90 : x
  2. Step 2: Convert to fraction form
    27,696.24/38,220.66 = 15,120.90/x
  3. Step 3: Cross multiply
    27,696.24x = 38,220.66 × 15,120.90
  4. Step 4: Simplify right side
    27,696.24x = 577,930,777.79
  5. Step 5: Solve for x
    x = 577,930,777.79/27,696.24
  6. Step 6: Final answer
    x = 20,866.76

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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.