Home / 12,086.30-16,680.62-6,781.08

Finding the Fourth Proportional to 12,086.30, 16,680.62 and 6,781.08

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Solution

The fourth proportional to 12,086.30, 16,680.62 and 6,781.08 is: 9,358.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.30 : 16,680.62 = 6,781.08 : x
  2. Step 2: Convert to fraction form
    12,086.30/16,680.62 = 6,781.08/x
  3. Step 3: Cross multiply
    12,086.30x = 16,680.62 × 6,781.08
  4. Step 4: Simplify right side
    12,086.30x = 113,112,698.17
  5. Step 5: Solve for x
    x = 113,112,698.17/12,086.30
  6. Step 6: Final answer
    x = 9,358.75

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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.