Home / 27,722.88-38,257.68-15,147.90

Finding the Fourth Proportional to 27,722.88, 38,257.68 and 15,147.90

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Solution

The fourth proportional to 27,722.88, 38,257.68 and 15,147.90 is: 20,904.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,722.88 : 38,257.68 = 15,147.90 : x
  2. Step 2: Convert to fraction form
    27,722.88/38,257.68 = 15,147.90/x
  3. Step 3: Cross multiply
    27,722.88x = 38,257.68 × 15,147.90
  4. Step 4: Simplify right side
    27,722.88x = 579,523,510.87
  5. Step 5: Solve for x
    x = 579,523,510.87/27,722.88
  6. Step 6: Final answer
    x = 20,904.16

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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.