Home / 27,975.97-38,621.10-21,588.20

Finding the Fourth Proportional to 27,975.97, 38,621.10 and 21,588.20

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Solution

The fourth proportional to 27,975.97, 38,621.10 and 21,588.20 is: 29,802.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,975.97 : 38,621.10 = 21,588.20 : x
  2. Step 2: Convert to fraction form
    27,975.97/38,621.10 = 21,588.20/x
  3. Step 3: Cross multiply
    27,975.97x = 38,621.10 × 21,588.20
  4. Step 4: Simplify right side
    27,975.97x = 833,760,280.94
  5. Step 5: Solve for x
    x = 833,760,280.94/27,975.97
  6. Step 6: Final answer
    x = 29,802.73

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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.