Home / 33,320.40-45,982.44-21,384

Finding the Fourth Proportional to 33,320.40, 45,982.44 and 21,384

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Solution

The fourth proportional to 33,320.40, 45,982.44 and 21,384 is: 29,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,320.40 : 45,982.44 = 21,384 : x
  2. Step 2: Convert to fraction form
    33,320.40/45,982.44 = 21,384/x
  3. Step 3: Cross multiply
    33,320.40x = 45,982.44 × 21,384
  4. Step 4: Simplify right side
    33,320.40x = 983,288,496.96
  5. Step 5: Solve for x
    x = 983,288,496.96/33,320.40
  6. Step 6: Final answer
    x = 29,510.10

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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.