Home / 12,180.30-16,809.42-7,400.28

Finding the Fourth Proportional to 12,180.30, 16,809.42 and 7,400.28

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Solution

The fourth proportional to 12,180.30, 16,809.42 and 7,400.28 is: 10,212.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.30 : 16,809.42 = 7,400.28 : x
  2. Step 2: Convert to fraction form
    12,180.30/16,809.42 = 7,400.28/x
  3. Step 3: Cross multiply
    12,180.30x = 16,809.42 × 7,400.28
  4. Step 4: Simplify right side
    12,180.30x = 124,394,414.64
  5. Step 5: Solve for x
    x = 124,394,414.64/12,180.30
  6. Step 6: Final answer
    x = 10,212.75

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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.