Home / 11,277.50-16,921.11-6,660.50

Finding the Fourth Proportional to 11,277.50, 16,921.11 and 6,660.50

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Solution

The fourth proportional to 11,277.50, 16,921.11 and 6,660.50 is: 9,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,277.50 : 16,921.11 = 6,660.50 : x
  2. Step 2: Convert to fraction form
    11,277.50/16,921.11 = 6,660.50/x
  3. Step 3: Cross multiply
    11,277.50x = 16,921.11 × 6,660.50
  4. Step 4: Simplify right side
    11,277.50x = 112,703,053.16
  5. Step 5: Solve for x
    x = 112,703,053.16/11,277.50
  6. Step 6: Final answer
    x = 9,993.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.