Home / 28,049.68-38,706.56-15,786.87

Finding the Fourth Proportional to 28,049.68, 38,706.56 and 15,786.87

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Solution

The fourth proportional to 28,049.68, 38,706.56 and 15,786.87 is: 21,784.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,049.68 : 38,706.56 = 15,786.87 : x
  2. Step 2: Convert to fraction form
    28,049.68/38,706.56 = 15,786.87/x
  3. Step 3: Cross multiply
    28,049.68x = 38,706.56 × 15,786.87
  4. Step 4: Simplify right side
    28,049.68x = 611,055,351.93
  5. Step 5: Solve for x
    x = 611,055,351.93/28,049.68
  6. Step 6: Final answer
    x = 21,784.76

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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.