Home / 11,291.75-15,583.16-6,815.42

Finding the Fourth Proportional to 11,291.75, 15,583.16 and 6,815.42

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Solution

The fourth proportional to 11,291.75, 15,583.16 and 6,815.42 is: 9,405.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,291.75 : 15,583.16 = 6,815.42 : x
  2. Step 2: Convert to fraction form
    11,291.75/15,583.16 = 6,815.42/x
  3. Step 3: Cross multiply
    11,291.75x = 15,583.16 × 6,815.42
  4. Step 4: Simplify right side
    11,291.75x = 106,205,780.33
  5. Step 5: Solve for x
    x = 106,205,780.33/11,291.75
  6. Step 6: Final answer
    x = 9,405.61

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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.