Home / 39,578.21-54,617.89-21,673.56

Finding the Fourth Proportional to 39,578.21, 54,617.89 and 21,673.56

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Solution

The fourth proportional to 39,578.21, 54,617.89 and 21,673.56 is: 29,909.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,578.21 : 54,617.89 = 21,673.56 : x
  2. Step 2: Convert to fraction form
    39,578.21/54,617.89 = 21,673.56/x
  3. Step 3: Cross multiply
    39,578.21x = 54,617.89 × 21,673.56
  4. Step 4: Simplify right side
    39,578.21x = 1,183,764,007.62
  5. Step 5: Solve for x
    x = 1,183,764,007.62/39,578.21
  6. Step 6: Final answer
    x = 29,909.49

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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.