Home / 11,221.60-15,485.12-6,185.56

Finding the Fourth Proportional to 11,221.60, 15,485.12 and 6,185.56

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Solution

The fourth proportional to 11,221.60, 15,485.12 and 6,185.56 is: 8,535.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.60 : 15,485.12 = 6,185.56 : x
  2. Step 2: Convert to fraction form
    11,221.60/15,485.12 = 6,185.56/x
  3. Step 3: Cross multiply
    11,221.60x = 15,485.12 × 6,185.56
  4. Step 4: Simplify right side
    11,221.60x = 95,784,146.65
  5. Step 5: Solve for x
    x = 95,784,146.65/11,221.60
  6. Step 6: Final answer
    x = 8,535.69

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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.