Home / 27,816.97-38,390.17-15,882.10

Finding the Fourth Proportional to 27,816.97, 38,390.17 and 15,882.10

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Solution

The fourth proportional to 27,816.97, 38,390.17 and 15,882.10 is: 21,918.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,816.97 : 38,390.17 = 15,882.10 : x
  2. Step 2: Convert to fraction form
    27,816.97/38,390.17 = 15,882.10/x
  3. Step 3: Cross multiply
    27,816.97x = 38,390.17 × 15,882.10
  4. Step 4: Simplify right side
    27,816.97x = 609,716,454.03
  5. Step 5: Solve for x
    x = 609,716,454.03/27,816.97
  6. Step 6: Final answer
    x = 21,918.87

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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.