Home / 11,720.97-16,174.98-6,415.83

Finding the Fourth Proportional to 11,720.97, 16,174.98 and 6,415.83

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Solution

The fourth proportional to 11,720.97, 16,174.98 and 6,415.83 is: 8,853.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.97 : 16,174.98 = 6,415.83 : x
  2. Step 2: Convert to fraction form
    11,720.97/16,174.98 = 6,415.83/x
  3. Step 3: Cross multiply
    11,720.97x = 16,174.98 × 6,415.83
  4. Step 4: Simplify right side
    11,720.97x = 103,775,921.93
  5. Step 5: Solve for x
    x = 103,775,921.93/11,720.97
  6. Step 6: Final answer
    x = 8,853.87

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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.