Home / 39,791.28-59,574.60-21,028.80

Finding the Fourth Proportional to 39,791.28, 59,574.60 and 21,028.80

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Solution

The fourth proportional to 39,791.28, 59,574.60 and 21,028.80 is: 31,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,791.28 : 59,574.60 = 21,028.80 : x
  2. Step 2: Convert to fraction form
    39,791.28/59,574.60 = 21,028.80/x
  3. Step 3: Cross multiply
    39,791.28x = 59,574.60 × 21,028.80
  4. Step 4: Simplify right side
    39,791.28x = 1,252,782,348.48
  5. Step 5: Solve for x
    x = 1,252,782,348.48/39,791.28
  6. Step 6: Final answer
    x = 31,483.84

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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.