Home / 11,724.85-16,178.78-6,688.77

Finding the Fourth Proportional to 11,724.85, 16,178.78 and 6,688.77

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Solution

The fourth proportional to 11,724.85, 16,178.78 and 6,688.77 is: 9,229.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.85 : 16,178.78 = 6,688.77 : x
  2. Step 2: Convert to fraction form
    11,724.85/16,178.78 = 6,688.77/x
  3. Step 3: Cross multiply
    11,724.85x = 16,178.78 × 6,688.77
  4. Step 4: Simplify right side
    11,724.85x = 108,216,023.96
  5. Step 5: Solve for x
    x = 108,216,023.96/11,724.85
  6. Step 6: Final answer
    x = 9,229.63

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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.