Home / 20,684.62-28,554.69-12,733.66

Finding the Fourth Proportional to 20,684.62, 28,554.69 and 12,733.66

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Solution

The fourth proportional to 20,684.62, 28,554.69 and 12,733.66 is: 17,578.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.62 : 28,554.69 = 12,733.66 : x
  2. Step 2: Convert to fraction form
    20,684.62/28,554.69 = 12,733.66/x
  3. Step 3: Cross multiply
    20,684.62x = 28,554.69 × 12,733.66
  4. Step 4: Simplify right side
    20,684.62x = 363,605,713.87
  5. Step 5: Solve for x
    x = 363,605,713.87/20,684.62
  6. Step 6: Final answer
    x = 17,578.55

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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.