Home / 39,391.09-54,359.87-21,486.48

Finding the Fourth Proportional to 39,391.09, 54,359.87 and 21,486.48

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Solution

The fourth proportional to 39,391.09, 54,359.87 and 21,486.48 is: 29,651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,391.09 : 54,359.87 = 21,486.48 : x
  2. Step 2: Convert to fraction form
    39,391.09/54,359.87 = 21,486.48/x
  3. Step 3: Cross multiply
    39,391.09x = 54,359.87 × 21,486.48
  4. Step 4: Simplify right side
    39,391.09x = 1,168,002,259.56
  5. Step 5: Solve for x
    x = 1,168,002,259.56/39,391.09
  6. Step 6: Final answer
    x = 29,651.43

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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.