Home / 11,103.87-15,330.02-6,917.79

Finding the Fourth Proportional to 11,103.87, 15,330.02 and 6,917.79

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Solution

The fourth proportional to 11,103.87, 15,330.02 and 6,917.79 is: 9,550.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,103.87 : 15,330.02 = 6,917.79 : x
  2. Step 2: Convert to fraction form
    11,103.87/15,330.02 = 6,917.79/x
  3. Step 3: Cross multiply
    11,103.87x = 15,330.02 × 6,917.79
  4. Step 4: Simplify right side
    11,103.87x = 106,049,824.47
  5. Step 5: Solve for x
    x = 106,049,824.47/11,103.87
  6. Step 6: Final answer
    x = 9,550.71

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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.