Home / 39,878.22-55,034.44-21,973.22

Finding the Fourth Proportional to 39,878.22, 55,034.44 and 21,973.22

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Solution

The fourth proportional to 39,878.22, 55,034.44 and 21,973.22 is: 30,324.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,878.22 : 55,034.44 = 21,973.22 : x
  2. Step 2: Convert to fraction form
    39,878.22/55,034.44 = 21,973.22/x
  3. Step 3: Cross multiply
    39,878.22x = 55,034.44 × 21,973.22
  4. Step 4: Simplify right side
    39,878.22x = 1,209,283,857.70
  5. Step 5: Solve for x
    x = 1,209,283,857.70/39,878.22
  6. Step 6: Final answer
    x = 30,324.42

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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.