Home / 27,976.70-38,604.24-18,921.71

Finding the Fourth Proportional to 27,976.70, 38,604.24 and 18,921.71

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Solution

The fourth proportional to 27,976.70, 38,604.24 and 18,921.71 is: 26,109.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,976.70 : 38,604.24 = 18,921.71 : x
  2. Step 2: Convert to fraction form
    27,976.70/38,604.24 = 18,921.71/x
  3. Step 3: Cross multiply
    27,976.70x = 38,604.24 × 18,921.71
  4. Step 4: Simplify right side
    27,976.70x = 730,458,041.03
  5. Step 5: Solve for x
    x = 730,458,041.03/27,976.70
  6. Step 6: Final answer
    x = 26,109.52

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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.