Home / 33,315.80-45,982.22-21,394.20

Finding the Fourth Proportional to 33,315.80, 45,982.22 and 21,394.20

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Solution

The fourth proportional to 33,315.80, 45,982.22 and 21,394.20 is: 29,528.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,315.80 : 45,982.22 = 21,394.20 : x
  2. Step 2: Convert to fraction form
    33,315.80/45,982.22 = 21,394.20/x
  3. Step 3: Cross multiply
    33,315.80x = 45,982.22 × 21,394.20
  4. Step 4: Simplify right side
    33,315.80x = 983,752,811.12
  5. Step 5: Solve for x
    x = 983,752,811.12/33,315.80
  6. Step 6: Final answer
    x = 29,528.12

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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.