Home / 39,791.57-54,911.34-21,642.08

Finding the Fourth Proportional to 39,791.57, 54,911.34 and 21,642.08

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Solution

The fourth proportional to 39,791.57, 54,911.34 and 21,642.08 is: 29,865.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.57 : 54,911.34 = 21,642.08 : x
  2. Step 2: Convert to fraction form
    39,791.57/54,911.34 = 21,642.08/x
  3. Step 3: Cross multiply
    39,791.57x = 54,911.34 × 21,642.08
  4. Step 4: Simplify right side
    39,791.57x = 1,188,395,338.63
  5. Step 5: Solve for x
    x = 1,188,395,338.63/39,791.57
  6. Step 6: Final answer
    x = 29,865.51

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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.