Home / 20,883.62-28,820.86-11,452.80

Finding the Fourth Proportional to 20,883.62, 28,820.86 and 11,452.80

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Solution

The fourth proportional to 20,883.62, 28,820.86 and 11,452.80 is: 15,805.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.62 : 28,820.86 = 11,452.80 : x
  2. Step 2: Convert to fraction form
    20,883.62/28,820.86 = 11,452.80/x
  3. Step 3: Cross multiply
    20,883.62x = 28,820.86 × 11,452.80
  4. Step 4: Simplify right side
    20,883.62x = 330,079,545.41
  5. Step 5: Solve for x
    x = 330,079,545.41/20,883.62
  6. Step 6: Final answer
    x = 15,805.67

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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.