Home / 20,708.42-28,578.82-15,594.79

Finding the Fourth Proportional to 20,708.42, 28,578.82 and 15,594.79

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Solution

The fourth proportional to 20,708.42, 28,578.82 and 15,594.79 is: 21,521.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,708.42 : 28,578.82 = 15,594.79 : x
  2. Step 2: Convert to fraction form
    20,708.42/28,578.82 = 15,594.79/x
  3. Step 3: Cross multiply
    20,708.42x = 28,578.82 × 15,594.79
  4. Step 4: Simplify right side
    20,708.42x = 445,680,553.45
  5. Step 5: Solve for x
    x = 445,680,553.45/20,708.42
  6. Step 6: Final answer
    x = 21,521.71

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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.