Home / 27,696.74-38,221.31-15,121.49

Finding the Fourth Proportional to 27,696.74, 38,221.31 and 15,121.49

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Solution

The fourth proportional to 27,696.74, 38,221.31 and 15,121.49 is: 20,867.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,696.74 : 38,221.31 = 15,121.49 : x
  2. Step 2: Convert to fraction form
    27,696.74/38,221.31 = 15,121.49/x
  3. Step 3: Cross multiply
    27,696.74x = 38,221.31 × 15,121.49
  4. Step 4: Simplify right side
    27,696.74x = 577,963,081.34
  5. Step 5: Solve for x
    x = 577,963,081.34/27,696.74
  6. Step 6: Final answer
    x = 20,867.55

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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.