Home / 39,786.50-54,906.75-21,882.86

Finding the Fourth Proportional to 39,786.50, 54,906.75 and 21,882.86

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Solution

The fourth proportional to 39,786.50, 54,906.75 and 21,882.86 is: 30,199.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,786.50 : 54,906.75 = 21,882.86 : x
  2. Step 2: Convert to fraction form
    39,786.50/54,906.75 = 21,882.86/x
  3. Step 3: Cross multiply
    39,786.50x = 54,906.75 × 21,882.86
  4. Step 4: Simplify right side
    39,786.50x = 1,201,516,723.31
  5. Step 5: Solve for x
    x = 1,201,516,723.31/39,786.50
  6. Step 6: Final answer
    x = 30,199.11

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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.