Home / 27,931.50-38,546.20-15,185.54

Finding the Fourth Proportional to 27,931.50, 38,546.20 and 15,185.54

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Solution

The fourth proportional to 27,931.50, 38,546.20 and 15,185.54 is: 20,956.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.50 : 38,546.20 = 15,185.54 : x
  2. Step 2: Convert to fraction form
    27,931.50/38,546.20 = 15,185.54/x
  3. Step 3: Cross multiply
    27,931.50x = 38,546.20 × 15,185.54
  4. Step 4: Simplify right side
    27,931.50x = 585,344,861.95
  5. Step 5: Solve for x
    x = 585,344,861.95/27,931.50
  6. Step 6: Final answer
    x = 20,956.44

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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.