Home / 20,694.78-28,545.84-17,236.44

Finding the Fourth Proportional to 20,694.78, 28,545.84 and 17,236.44

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Solution

The fourth proportional to 20,694.78, 28,545.84 and 17,236.44 is: 23,775.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.78 : 28,545.84 = 17,236.44 : x
  2. Step 2: Convert to fraction form
    20,694.78/28,545.84 = 17,236.44/x
  3. Step 3: Cross multiply
    20,694.78x = 28,545.84 × 17,236.44
  4. Step 4: Simplify right side
    20,694.78x = 492,028,658.41
  5. Step 5: Solve for x
    x = 492,028,658.41/20,694.78
  6. Step 6: Final answer
    x = 23,775.50

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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.