Home / 33,132.72-45,724.20-18,990

Finding the Fourth Proportional to 33,132.72, 45,724.20 and 18,990

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Solution

The fourth proportional to 33,132.72, 45,724.20 and 18,990 is: 26,206.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,132.72 : 45,724.20 = 18,990 : x
  2. Step 2: Convert to fraction form
    33,132.72/45,724.20 = 18,990/x
  3. Step 3: Cross multiply
    33,132.72x = 45,724.20 × 18,990
  4. Step 4: Simplify right side
    33,132.72x = 868,302,558
  5. Step 5: Solve for x
    x = 868,302,558/33,132.72
  6. Step 6: Final answer
    x = 26,206.80

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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.