Home / 11,680.86-16,119.45-6,375.78

Finding the Fourth Proportional to 11,680.86, 16,119.45 and 6,375.78

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Solution

The fourth proportional to 11,680.86, 16,119.45 and 6,375.78 is: 8,798.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.86 : 16,119.45 = 6,375.78 : x
  2. Step 2: Convert to fraction form
    11,680.86/16,119.45 = 6,375.78/x
  3. Step 3: Cross multiply
    11,680.86x = 16,119.45 × 6,375.78
  4. Step 4: Simplify right side
    11,680.86x = 102,774,066.92
  5. Step 5: Solve for x
    x = 102,774,066.92/11,680.86
  6. Step 6: Final answer
    x = 8,798.50

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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.