Home / 22,278.08-30,747.12-12,844.64

Finding the Fourth Proportional to 22,278.08, 30,747.12 and 12,844.64

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Solution

The fourth proportional to 22,278.08, 30,747.12 and 12,844.64 is: 17,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,278.08 : 30,747.12 = 12,844.64 : x
  2. Step 2: Convert to fraction form
    22,278.08/30,747.12 = 12,844.64/x
  3. Step 3: Cross multiply
    22,278.08x = 30,747.12 × 12,844.64
  4. Step 4: Simplify right side
    22,278.08x = 394,935,687.44
  5. Step 5: Solve for x
    x = 394,935,687.44/22,278.08
  6. Step 6: Final answer
    x = 17,727.55

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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.