Home / 39,918.43-55,086.64-22,015.09

Finding the Fourth Proportional to 39,918.43, 55,086.64 and 22,015.09

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Solution

The fourth proportional to 39,918.43, 55,086.64 and 22,015.09 is: 30,380.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,918.43 : 55,086.64 = 22,015.09 : x
  2. Step 2: Convert to fraction form
    39,918.43/55,086.64 = 22,015.09/x
  3. Step 3: Cross multiply
    39,918.43x = 55,086.64 × 22,015.09
  4. Step 4: Simplify right side
    39,918.43x = 1,212,737,337.40
  5. Step 5: Solve for x
    x = 1,212,737,337.40/39,918.43
  6. Step 6: Final answer
    x = 30,380.39

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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.