Home / 39,287.94-54,216.60-21,383.34

Finding the Fourth Proportional to 39,287.94, 54,216.60 and 21,383.34

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Solution

The fourth proportional to 39,287.94, 54,216.60 and 21,383.34 is: 29,508.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,287.94 : 54,216.60 = 21,383.34 : x
  2. Step 2: Convert to fraction form
    39,287.94/54,216.60 = 21,383.34/x
  3. Step 3: Cross multiply
    39,287.94x = 54,216.60 × 21,383.34
  4. Step 4: Simplify right side
    39,287.94x = 1,159,331,991.44
  5. Step 5: Solve for x
    x = 1,159,331,991.44/39,287.94
  6. Step 6: Final answer
    x = 29,508.60

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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.