Home / 39,287.88-54,216.42-21,382.44

Finding the Fourth Proportional to 39,287.88, 54,216.42 and 21,382.44

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Solution

The fourth proportional to 39,287.88, 54,216.42 and 21,382.44 is: 29,507.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.88 : 54,216.42 = 21,382.44 : x
  2. Step 2: Convert to fraction form
    39,287.88/54,216.42 = 21,382.44/x
  3. Step 3: Cross multiply
    39,287.88x = 54,216.42 × 21,382.44
  4. Step 4: Simplify right side
    39,287.88x = 1,159,279,347.66
  5. Step 5: Solve for x
    x = 1,159,279,347.66/39,287.88
  6. Step 6: Final answer
    x = 29,507.30

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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.