Home / 33,165.66-45,754.08-21,820.56

Finding the Fourth Proportional to 33,165.66, 45,754.08 and 21,820.56

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Solution

The fourth proportional to 33,165.66, 45,754.08 and 21,820.56 is: 30,102.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,165.66 : 45,754.08 = 21,820.56 : x
  2. Step 2: Convert to fraction form
    33,165.66/45,754.08 = 21,820.56/x
  3. Step 3: Cross multiply
    33,165.66x = 45,754.08 × 21,820.56
  4. Step 4: Simplify right side
    33,165.66x = 998,379,647.88
  5. Step 5: Solve for x
    x = 998,379,647.88/33,165.66
  6. Step 6: Final answer
    x = 30,102.81

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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.