Home / 20,851.27-28,774.83-11,419.83

Finding the Fourth Proportional to 20,851.27, 28,774.83 and 11,419.83

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Solution

The fourth proportional to 20,851.27, 28,774.83 and 11,419.83 is: 15,759.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.27 : 28,774.83 = 11,419.83 : x
  2. Step 2: Convert to fraction form
    20,851.27/28,774.83 = 11,419.83/x
  3. Step 3: Cross multiply
    20,851.27x = 28,774.83 × 11,419.83
  4. Step 4: Simplify right side
    20,851.27x = 328,603,709.70
  5. Step 5: Solve for x
    x = 328,603,709.70/20,851.27
  6. Step 6: Final answer
    x = 15,759.41

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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.