Home / 20,883.69-28,819.45-11,452.86

Finding the Fourth Proportional to 20,883.69, 28,819.45 and 11,452.86

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Solution

The fourth proportional to 20,883.69, 28,819.45 and 11,452.86 is: 15,804.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,883.69 : 28,819.45 = 11,452.86 : x
  2. Step 2: Convert to fraction form
    20,883.69/28,819.45 = 11,452.86/x
  3. Step 3: Cross multiply
    20,883.69x = 28,819.45 × 11,452.86
  4. Step 4: Simplify right side
    20,883.69x = 330,065,126.13
  5. Step 5: Solve for x
    x = 330,065,126.13/20,883.69
  6. Step 6: Final answer
    x = 15,804.92

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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.