Home / 12,822.40-19,195.20-11,286.40

Finding the Fourth Proportional to 12,822.40, 19,195.20 and 11,286.40

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Solution

The fourth proportional to 12,822.40, 19,195.20 and 11,286.40 is: 16,895.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,822.40 : 19,195.20 = 11,286.40 : x
  2. Step 2: Convert to fraction form
    12,822.40/19,195.20 = 11,286.40/x
  3. Step 3: Cross multiply
    12,822.40x = 19,195.20 × 11,286.40
  4. Step 4: Simplify right side
    12,822.40x = 216,644,705.28
  5. Step 5: Solve for x
    x = 216,644,705.28/12,822.40
  6. Step 6: Final answer
    x = 16,895.80

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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.