Home / 11,928.20-16,459.81-6,622.70

Finding the Fourth Proportional to 11,928.20, 16,459.81 and 6,622.70

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Solution

The fourth proportional to 11,928.20, 16,459.81 and 6,622.70 is: 9,138.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.20 : 16,459.81 = 6,622.70 : x
  2. Step 2: Convert to fraction form
    11,928.20/16,459.81 = 6,622.70/x
  3. Step 3: Cross multiply
    11,928.20x = 16,459.81 × 6,622.70
  4. Step 4: Simplify right side
    11,928.20x = 109,008,284.83
  5. Step 5: Solve for x
    x = 109,008,284.83/11,928.20
  6. Step 6: Final answer
    x = 9,138.71

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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.