Home / 11,724.96-16,180.44-6,420.12

Finding the Fourth Proportional to 11,724.96, 16,180.44 and 6,420.12

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Solution

The fourth proportional to 11,724.96, 16,180.44 and 6,420.12 is: 8,859.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.96 : 16,180.44 = 6,420.12 : x
  2. Step 2: Convert to fraction form
    11,724.96/16,180.44 = 6,420.12/x
  3. Step 3: Cross multiply
    11,724.96x = 16,180.44 × 6,420.12
  4. Step 4: Simplify right side
    11,724.96x = 103,880,366.45
  5. Step 5: Solve for x
    x = 103,880,366.45/11,724.96
  6. Step 6: Final answer
    x = 8,859.76

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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.