Home / 39,898.97-55,060.73-21,749.60

Finding the Fourth Proportional to 39,898.97, 55,060.73 and 21,749.60

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Solution

The fourth proportional to 39,898.97, 55,060.73 and 21,749.60 is: 30,014.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,898.97 : 55,060.73 = 21,749.60 : x
  2. Step 2: Convert to fraction form
    39,898.97/55,060.73 = 21,749.60/x
  3. Step 3: Cross multiply
    39,898.97x = 55,060.73 × 21,749.60
  4. Step 4: Simplify right side
    39,898.97x = 1,197,548,469.16
  5. Step 5: Solve for x
    x = 1,197,548,469.16/39,898.97
  6. Step 6: Final answer
    x = 30,014.52

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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.