Home / 18,821.97-25,973.49-11,272.50

Finding the Fourth Proportional to 18,821.97, 25,973.49 and 11,272.50

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Solution

The fourth proportional to 18,821.97, 25,973.49 and 11,272.50 is: 15,555.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.97 : 25,973.49 = 11,272.50 : x
  2. Step 2: Convert to fraction form
    18,821.97/25,973.49 = 11,272.50/x
  3. Step 3: Cross multiply
    18,821.97x = 25,973.49 × 11,272.50
  4. Step 4: Simplify right side
    18,821.97x = 292,786,208.30
  5. Step 5: Solve for x
    x = 292,786,208.30/18,821.97
  6. Step 6: Final answer
    x = 15,555.56

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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.