Home / 33,129.90-45,726.39-21,800.43

Finding the Fourth Proportional to 33,129.90, 45,726.39 and 21,800.43

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Solution

The fourth proportional to 33,129.90, 45,726.39 and 21,800.43 is: 30,089.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,129.90 : 45,726.39 = 21,800.43 : x
  2. Step 2: Convert to fraction form
    33,129.90/45,726.39 = 21,800.43/x
  3. Step 3: Cross multiply
    33,129.90x = 45,726.39 × 21,800.43
  4. Step 4: Simplify right side
    33,129.90x = 996,854,964.35
  5. Step 5: Solve for x
    x = 996,854,964.35/33,129.90
  6. Step 6: Final answer
    x = 30,089.28

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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.