Home / 11,133.31-15,366.50-6,940.75

Finding the Fourth Proportional to 11,133.31, 15,366.50 and 6,940.75

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Solution

The fourth proportional to 11,133.31, 15,366.50 and 6,940.75 is: 9,579.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,133.31 : 15,366.50 = 6,940.75 : x
  2. Step 2: Convert to fraction form
    11,133.31/15,366.50 = 6,940.75/x
  3. Step 3: Cross multiply
    11,133.31x = 15,366.50 × 6,940.75
  4. Step 4: Simplify right side
    11,133.31x = 106,655,034.88
  5. Step 5: Solve for x
    x = 106,655,034.88/11,133.31
  6. Step 6: Final answer
    x = 9,579.81

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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.