Home / 27,960.50-38,583.72-15,213.56

Finding the Fourth Proportional to 27,960.50, 38,583.72 and 15,213.56

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Solution

The fourth proportional to 27,960.50, 38,583.72 and 15,213.56 is: 20,993.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,960.50 : 38,583.72 = 15,213.56 : x
  2. Step 2: Convert to fraction form
    27,960.50/38,583.72 = 15,213.56/x
  3. Step 3: Cross multiply
    27,960.50x = 38,583.72 × 15,213.56
  4. Step 4: Simplify right side
    27,960.50x = 586,995,739.24
  5. Step 5: Solve for x
    x = 586,995,739.24/27,960.50
  6. Step 6: Final answer
    x = 20,993.75

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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.