Home / 20,617.71-30,878.43-15,057.27

Finding the Fourth Proportional to 20,617.71, 30,878.43 and 15,057.27

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Solution

The fourth proportional to 20,617.71, 30,878.43 and 15,057.27 is: 22,550.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.71 : 30,878.43 = 15,057.27 : x
  2. Step 2: Convert to fraction form
    20,617.71/30,878.43 = 15,057.27/x
  3. Step 3: Cross multiply
    20,617.71x = 30,878.43 × 15,057.27
  4. Step 4: Simplify right side
    20,617.71x = 464,944,857.69
  5. Step 5: Solve for x
    x = 464,944,857.69/20,617.71
  6. Step 6: Final answer
    x = 22,550.75

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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.