Home / 11,815.74-16,305.52-6,438.24

Finding the Fourth Proportional to 11,815.74, 16,305.52 and 6,438.24

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Solution

The fourth proportional to 11,815.74, 16,305.52 and 6,438.24 is: 8,884.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,815.74 : 16,305.52 = 6,438.24 : x
  2. Step 2: Convert to fraction form
    11,815.74/16,305.52 = 6,438.24/x
  3. Step 3: Cross multiply
    11,815.74x = 16,305.52 × 6,438.24
  4. Step 4: Simplify right side
    11,815.74x = 104,978,811.35
  5. Step 5: Solve for x
    x = 104,978,811.35/11,815.74
  6. Step 6: Final answer
    x = 8,884.66

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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.