Home / 39,911.20-55,077.68-22,005.90

Finding the Fourth Proportional to 39,911.20, 55,077.68 and 22,005.90

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Solution

The fourth proportional to 39,911.20, 55,077.68 and 22,005.90 is: 30,368.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,911.20 : 55,077.68 = 22,005.90 : x
  2. Step 2: Convert to fraction form
    39,911.20/55,077.68 = 22,005.90/x
  3. Step 3: Cross multiply
    39,911.20x = 55,077.68 × 22,005.90
  4. Step 4: Simplify right side
    39,911.20x = 1,212,033,973.33
  5. Step 5: Solve for x
    x = 1,212,033,973.33/39,911.20
  6. Step 6: Final answer
    x = 30,368.27

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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.