Home / 39,873.82-55,023.90-21,968.36

Finding the Fourth Proportional to 39,873.82, 55,023.90 and 21,968.36

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Solution

The fourth proportional to 39,873.82, 55,023.90 and 21,968.36 is: 30,315.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,873.82 : 55,023.90 = 21,968.36 : x
  2. Step 2: Convert to fraction form
    39,873.82/55,023.90 = 21,968.36/x
  3. Step 3: Cross multiply
    39,873.82x = 55,023.90 × 21,968.36
  4. Step 4: Simplify right side
    39,873.82x = 1,208,784,843.80
  5. Step 5: Solve for x
    x = 1,208,784,843.80/39,873.82
  6. Step 6: Final answer
    x = 30,315.25

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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.