Home / 20,839.66-28,756.90-11,764.53

Finding the Fourth Proportional to 20,839.66, 28,756.90 and 11,764.53

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Solution

The fourth proportional to 20,839.66, 28,756.90 and 11,764.53 is: 16,234.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,839.66 : 28,756.90 = 11,764.53 : x
  2. Step 2: Convert to fraction form
    20,839.66/28,756.90 = 11,764.53/x
  3. Step 3: Cross multiply
    20,839.66x = 28,756.90 × 11,764.53
  4. Step 4: Simplify right side
    20,839.66x = 338,311,412.76
  5. Step 5: Solve for x
    x = 338,311,412.76/20,839.66
  6. Step 6: Final answer
    x = 16,234.02

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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.