Home / 39,998.21-55,197.71-21,849.18

Finding the Fourth Proportional to 39,998.21, 55,197.71 and 21,849.18

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Solution

The fourth proportional to 39,998.21, 55,197.71 and 21,849.18 is: 30,151.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,998.21 : 55,197.71 = 21,849.18 : x
  2. Step 2: Convert to fraction form
    39,998.21/55,197.71 = 21,849.18/x
  3. Step 3: Cross multiply
    39,998.21x = 55,197.71 × 21,849.18
  4. Step 4: Simplify right side
    39,998.21x = 1,206,024,756.00
  5. Step 5: Solve for x
    x = 1,206,024,756.00/39,998.21
  6. Step 6: Final answer
    x = 30,151.97

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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.