Home / 39,212.86-54,115.82-22,220.40

Finding the Fourth Proportional to 39,212.86, 54,115.82 and 22,220.40

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Solution

The fourth proportional to 39,212.86, 54,115.82 and 22,220.40 is: 30,665.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,212.86 : 54,115.82 = 22,220.40 : x
  2. Step 2: Convert to fraction form
    39,212.86/54,115.82 = 22,220.40/x
  3. Step 3: Cross multiply
    39,212.86x = 54,115.82 × 22,220.40
  4. Step 4: Simplify right side
    39,212.86x = 1,202,475,252.18
  5. Step 5: Solve for x
    x = 1,202,475,252.18/39,212.86
  6. Step 6: Final answer
    x = 30,665.33

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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.