Home / 39,103.09-53,962.54-21,198.38

Finding the Fourth Proportional to 39,103.09, 53,962.54 and 21,198.38

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Solution

The fourth proportional to 39,103.09, 53,962.54 and 21,198.38 is: 29,253.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,103.09 : 53,962.54 = 21,198.38 : x
  2. Step 2: Convert to fraction form
    39,103.09/53,962.54 = 21,198.38/x
  3. Step 3: Cross multiply
    39,103.09x = 53,962.54 × 21,198.38
  4. Step 4: Simplify right side
    39,103.09x = 1,143,918,105.88
  5. Step 5: Solve for x
    x = 1,143,918,105.88/39,103.09
  6. Step 6: Final answer
    x = 29,253.91

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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.