Home / 11,721.58-16,176.20-6,685.74

Finding the Fourth Proportional to 11,721.58, 16,176.20 and 6,685.74

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Solution

The fourth proportional to 11,721.58, 16,176.20 and 6,685.74 is: 9,226.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.58 : 16,176.20 = 6,685.74 : x
  2. Step 2: Convert to fraction form
    11,721.58/16,176.20 = 6,685.74/x
  3. Step 3: Cross multiply
    11,721.58x = 16,176.20 × 6,685.74
  4. Step 4: Simplify right side
    11,721.58x = 108,149,867.39
  5. Step 5: Solve for x
    x = 108,149,867.39/11,721.58
  6. Step 6: Final answer
    x = 9,226.56

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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.