Home / 39,974.74-55,165.22-22,069.78

Finding the Fourth Proportional to 39,974.74, 55,165.22 and 22,069.78

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Solution

The fourth proportional to 39,974.74, 55,165.22 and 22,069.78 is: 30,456.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,974.74 : 55,165.22 = 22,069.78 : x
  2. Step 2: Convert to fraction form
    39,974.74/55,165.22 = 22,069.78/x
  3. Step 3: Cross multiply
    39,974.74x = 55,165.22 × 22,069.78
  4. Step 4: Simplify right side
    39,974.74x = 1,217,484,131.14
  5. Step 5: Solve for x
    x = 1,217,484,131.14/39,974.74
  6. Step 6: Final answer
    x = 30,456.34

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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.