Home / 39,286.71-54,216.99-21,382.37

Finding the Fourth Proportional to 39,286.71, 54,216.99 and 21,382.37

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Solution

The fourth proportional to 39,286.71, 54,216.99 and 21,382.37 is: 29,508.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.71 : 54,216.99 = 21,382.37 : x
  2. Step 2: Convert to fraction form
    39,286.71/54,216.99 = 21,382.37/x
  3. Step 3: Cross multiply
    39,286.71x = 54,216.99 × 21,382.37
  4. Step 4: Simplify right side
    39,286.71x = 1,159,287,469.38
  5. Step 5: Solve for x
    x = 1,159,287,469.38/39,286.71
  6. Step 6: Final answer
    x = 29,508.39

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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.