Home / 20,198.80-27,875.28-11,246.40

Finding the Fourth Proportional to 20,198.80, 27,875.28 and 11,246.40

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Solution

The fourth proportional to 20,198.80, 27,875.28 and 11,246.40 is: 15,520.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,198.80 : 27,875.28 = 11,246.40 : x
  2. Step 2: Convert to fraction form
    20,198.80/27,875.28 = 11,246.40/x
  3. Step 3: Cross multiply
    20,198.80x = 27,875.28 × 11,246.40
  4. Step 4: Simplify right side
    20,198.80x = 313,496,548.99
  5. Step 5: Solve for x
    x = 313,496,548.99/20,198.80
  6. Step 6: Final answer
    x = 15,520.55

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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.