Home / 20,717.37-28,589.67-11,764.80

Finding the Fourth Proportional to 20,717.37, 28,589.67 and 11,764.80

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Solution

The fourth proportional to 20,717.37, 28,589.67 and 11,764.80 is: 16,235.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,717.37 : 28,589.67 = 11,764.80 : x
  2. Step 2: Convert to fraction form
    20,717.37/28,589.67 = 11,764.80/x
  3. Step 3: Cross multiply
    20,717.37x = 28,589.67 × 11,764.80
  4. Step 4: Simplify right side
    20,717.37x = 336,351,749.62
  5. Step 5: Solve for x
    x = 336,351,749.62/20,717.37
  6. Step 6: Final answer
    x = 16,235.25

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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.