Home / 39,917.20-59,912.84-20,209.72

Finding the Fourth Proportional to 39,917.20, 59,912.84 and 20,209.72

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Solution

The fourth proportional to 39,917.20, 59,912.84 and 20,209.72 is: 30,333.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,917.20 : 59,912.84 = 20,209.72 : x
  2. Step 2: Convert to fraction form
    39,917.20/59,912.84 = 20,209.72/x
  3. Step 3: Cross multiply
    39,917.20x = 59,912.84 × 20,209.72
  4. Step 4: Simplify right side
    39,917.20x = 1,210,821,720.80
  5. Step 5: Solve for x
    x = 1,210,821,720.80/39,917.20
  6. Step 6: Final answer
    x = 30,333.33

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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.