Home / 27,696.06-38,220.54-15,120.81

Finding the Fourth Proportional to 27,696.06, 38,220.54 and 15,120.81

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Solution

The fourth proportional to 27,696.06, 38,220.54 and 15,120.81 is: 20,866.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,696.06 : 38,220.54 = 15,120.81 : x
  2. Step 2: Convert to fraction form
    27,696.06/38,220.54 = 15,120.81/x
  3. Step 3: Cross multiply
    27,696.06x = 38,220.54 × 15,120.81
  4. Step 4: Simplify right side
    27,696.06x = 577,925,523.44
  5. Step 5: Solve for x
    x = 577,925,523.44/27,696.06
  6. Step 6: Final answer
    x = 20,866.71

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Half scale
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Double scale
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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.