Home / 39,727.20-54,822.06-21,821.14

Finding the Fourth Proportional to 39,727.20, 54,822.06 and 21,821.14

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Solution

The fourth proportional to 39,727.20, 54,822.06 and 21,821.14 is: 30,112.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,727.20 : 54,822.06 = 21,821.14 : x
  2. Step 2: Convert to fraction form
    39,727.20/54,822.06 = 21,821.14/x
  3. Step 3: Cross multiply
    39,727.20x = 54,822.06 × 21,821.14
  4. Step 4: Simplify right side
    39,727.20x = 1,196,279,846.35
  5. Step 5: Solve for x
    x = 1,196,279,846.35/39,727.20
  6. Step 6: Final answer
    x = 30,112.36

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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.