Home / 12,120.54-16,726.03-6,815.26

Finding the Fourth Proportional to 12,120.54, 16,726.03 and 6,815.26

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Solution

The fourth proportional to 12,120.54, 16,726.03 and 6,815.26 is: 9,404.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,120.54 : 16,726.03 = 6,815.26 : x
  2. Step 2: Convert to fraction form
    12,120.54/16,726.03 = 6,815.26/x
  3. Step 3: Cross multiply
    12,120.54x = 16,726.03 × 6,815.26
  4. Step 4: Simplify right side
    12,120.54x = 113,992,243.22
  5. Step 5: Solve for x
    x = 113,992,243.22/12,120.54
  6. Step 6: Final answer
    x = 9,404.88

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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.