Home / 28,399.87-39,189-16,467.22

Finding the Fourth Proportional to 28,399.87, 39,189 and 16,467.22

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Solution

The fourth proportional to 28,399.87, 39,189 and 16,467.22 is: 22,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.87 : 39,189 = 16,467.22 : x
  2. Step 2: Convert to fraction form
    28,399.87/39,189 = 16,467.22/x
  3. Step 3: Cross multiply
    28,399.87x = 39,189 × 16,467.22
  4. Step 4: Simplify right side
    28,399.87x = 645,333,884.58
  5. Step 5: Solve for x
    x = 645,333,884.58/28,399.87
  6. Step 6: Final answer
    x = 22,723.13

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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.