Home / 20,716.77-28,589.70-11,763.70

Finding the Fourth Proportional to 20,716.77, 28,589.70 and 11,763.70

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Solution

The fourth proportional to 20,716.77, 28,589.70 and 11,763.70 is: 16,234.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.77 : 28,589.70 = 11,763.70 : x
  2. Step 2: Convert to fraction form
    20,716.77/28,589.70 = 11,763.70/x
  3. Step 3: Cross multiply
    20,716.77x = 28,589.70 × 11,763.70
  4. Step 4: Simplify right side
    20,716.77x = 336,320,653.89
  5. Step 5: Solve for x
    x = 336,320,653.89/20,716.77
  6. Step 6: Final answer
    x = 16,234.22

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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.