Home / 20,918.00-31,343.55-18,793.62

Finding the Fourth Proportional to 20,918.00, 31,343.55 and 18,793.62

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Solution

The fourth proportional to 20,918.00, 31,343.55 and 18,793.62 is: 28,160.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,918.00 : 31,343.55 = 18,793.62 : x
  2. Step 2: Convert to fraction form
    20,918.00/31,343.55 = 18,793.62/x
  3. Step 3: Cross multiply
    20,918.00x = 31,343.55 × 18,793.62
  4. Step 4: Simplify right side
    20,918.00x = 589,058,517.47
  5. Step 5: Solve for x
    x = 589,058,517.47/20,918.00
  6. Step 6: Final answer
    x = 28,160.37

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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.