Home / 12,081.66-16,657.26-7,825.20

Finding the Fourth Proportional to 12,081.66, 16,657.26 and 7,825.20

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Solution

The fourth proportional to 12,081.66, 16,657.26 and 7,825.20 is: 10,788.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,081.66 : 16,657.26 = 7,825.20 : x
  2. Step 2: Convert to fraction form
    12,081.66/16,657.26 = 7,825.20/x
  3. Step 3: Cross multiply
    12,081.66x = 16,657.26 × 7,825.20
  4. Step 4: Simplify right side
    12,081.66x = 130,346,390.95
  5. Step 5: Solve for x
    x = 130,346,390.95/12,081.66
  6. Step 6: Final answer
    x = 10,788.78

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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.