Home / 20,321,806.14-28,067,367.60-13,383,499.50

Finding the Fourth Proportional to 20,321,806.14, 28,067,367.60 and 13,383,499.50

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Solution

The fourth proportional to 20,321,806.14, 28,067,367.60 and 13,383,499.50 is: 18,484,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321,806.14 : 28,067,367.60 = 13,383,499.50 : x
  2. Step 2: Convert to fraction form
    20,321,806.14/28,067,367.60 = 13,383,499.50/x
  3. Step 3: Cross multiply
    20,321,806.14x = 28,067,367.60 × 13,383,499.50
  4. Step 4: Simplify right side
    20,321,806.14x = 375,639,600,240,916.25
  5. Step 5: Solve for x
    x = 375,639,600,240,916.25/20,321,806.14
  6. Step 6: Final answer
    x = 18,484,557.80

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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.