Home / 21,198.36-31,769.28-11,182.68

Finding the Fourth Proportional to 21,198.36, 31,769.28 and 11,182.68

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Solution

The fourth proportional to 21,198.36, 31,769.28 and 11,182.68 is: 16,759.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.36 : 31,769.28 = 11,182.68 : x
  2. Step 2: Convert to fraction form
    21,198.36/31,769.28 = 11,182.68/x
  3. Step 3: Cross multiply
    21,198.36x = 31,769.28 × 11,182.68
  4. Step 4: Simplify right side
    21,198.36x = 355,265,692.07
  5. Step 5: Solve for x
    x = 355,265,692.07/21,198.36
  6. Step 6: Final answer
    x = 16,759.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.