Home / 20,719.05-28,603.12-16,171.98

Finding the Fourth Proportional to 20,719.05, 28,603.12 and 16,171.98

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Solution

The fourth proportional to 20,719.05, 28,603.12 and 16,171.98 is: 22,325.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.05 : 28,603.12 = 16,171.98 : x
  2. Step 2: Convert to fraction form
    20,719.05/28,603.12 = 16,171.98/x
  3. Step 3: Cross multiply
    20,719.05x = 28,603.12 × 16,171.98
  4. Step 4: Simplify right side
    20,719.05x = 462,568,860.70
  5. Step 5: Solve for x
    x = 462,568,860.70/20,719.05
  6. Step 6: Final answer
    x = 22,325.78

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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.