Home / 13,415.14-20,122.39-4,649.95

Finding the Fourth Proportional to 13,415.14, 20,122.39 and 4,649.95

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Solution

The fourth proportional to 13,415.14, 20,122.39 and 4,649.95 is: 6,974.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.14 : 20,122.39 = 4,649.95 : x
  2. Step 2: Convert to fraction form
    13,415.14/20,122.39 = 4,649.95/x
  3. Step 3: Cross multiply
    13,415.14x = 20,122.39 × 4,649.95
  4. Step 4: Simplify right side
    13,415.14x = 93,568,107.38
  5. Step 5: Solve for x
    x = 93,568,107.38/13,415.14
  6. Step 6: Final answer
    x = 6,974.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.