Home / 33,135.62-45,728.42-18,991.20

Finding the Fourth Proportional to 33,135.62, 45,728.42 and 18,991.20

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Solution

The fourth proportional to 33,135.62, 45,728.42 and 18,991.20 is: 26,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,135.62 : 45,728.42 = 18,991.20 : x
  2. Step 2: Convert to fraction form
    33,135.62/45,728.42 = 18,991.20/x
  3. Step 3: Cross multiply
    33,135.62x = 45,728.42 × 18,991.20
  4. Step 4: Simplify right side
    33,135.62x = 868,437,569.90
  5. Step 5: Solve for x
    x = 868,437,569.90/33,135.62
  6. Step 6: Final answer
    x = 26,208.58

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1.5x scale

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.