Home / 39,172.80-58,791.60-18,145.20

Finding the Fourth Proportional to 39,172.80, 58,791.60 and 18,145.20

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Solution

The fourth proportional to 39,172.80, 58,791.60 and 18,145.20 is: 27,232.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,172.80 : 58,791.60 = 18,145.20 : x
  2. Step 2: Convert to fraction form
    39,172.80/58,791.60 = 18,145.20/x
  3. Step 3: Cross multiply
    39,172.80x = 58,791.60 × 18,145.20
  4. Step 4: Simplify right side
    39,172.80x = 1,066,785,340.32
  5. Step 5: Solve for x
    x = 1,066,785,340.32/39,172.80
  6. Step 6: Final answer
    x = 27,232.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.