Home / 11,425.56-15,766.65-6,388.77

Finding the Fourth Proportional to 11,425.56, 15,766.65 and 6,388.77

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Solution

The fourth proportional to 11,425.56, 15,766.65 and 6,388.77 is: 8,816.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.56 : 15,766.65 = 6,388.77 : x
  2. Step 2: Convert to fraction form
    11,425.56/15,766.65 = 6,388.77/x
  3. Step 3: Cross multiply
    11,425.56x = 15,766.65 × 6,388.77
  4. Step 4: Simplify right side
    11,425.56x = 100,729,559.65
  5. Step 5: Solve for x
    x = 100,729,559.65/11,425.56
  6. Step 6: Final answer
    x = 8,816.16

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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.