Home / 27,956.50-38,578.20-15,209.56

Finding the Fourth Proportional to 27,956.50, 38,578.20 and 15,209.56

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Solution

The fourth proportional to 27,956.50, 38,578.20 and 15,209.56 is: 20,988.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,956.50 : 38,578.20 = 15,209.56 : x
  2. Step 2: Convert to fraction form
    27,956.50/38,578.20 = 15,209.56/x
  3. Step 3: Cross multiply
    27,956.50x = 38,578.20 × 15,209.56
  4. Step 4: Simplify right side
    27,956.50x = 586,757,447.59
  5. Step 5: Solve for x
    x = 586,757,447.59/27,956.50
  6. Step 6: Final answer
    x = 20,988.23

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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.