Home / 11,185.80-15,435.20-6,469.16

Finding the Fourth Proportional to 11,185.80, 15,435.20 and 6,469.16

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Solution

The fourth proportional to 11,185.80, 15,435.20 and 6,469.16 is: 8,926.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.80 : 15,435.20 = 6,469.16 : x
  2. Step 2: Convert to fraction form
    11,185.80/15,435.20 = 6,469.16/x
  3. Step 3: Cross multiply
    11,185.80x = 15,435.20 × 6,469.16
  4. Step 4: Simplify right side
    11,185.80x = 99,852,778.43
  5. Step 5: Solve for x
    x = 99,852,778.43/11,185.80
  6. Step 6: Final answer
    x = 8,926.74

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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.