Home / 39,798.15-54,921.05-21,893.18

Finding the Fourth Proportional to 39,798.15, 54,921.05 and 21,893.18

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Solution

The fourth proportional to 39,798.15, 54,921.05 and 21,893.18 is: 30,212.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,798.15 : 54,921.05 = 21,893.18 : x
  2. Step 2: Convert to fraction form
    39,798.15/54,921.05 = 21,893.18/x
  3. Step 3: Cross multiply
    39,798.15x = 54,921.05 × 21,893.18
  4. Step 4: Simplify right side
    39,798.15x = 1,202,396,131.47
  5. Step 5: Solve for x
    x = 1,202,396,131.47/39,798.15
  6. Step 6: Final answer
    x = 30,212.37

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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.