Home / 11,720.89-16,174.77-6,415.66

Finding the Fourth Proportional to 11,720.89, 16,174.77 and 6,415.66

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Solution

The fourth proportional to 11,720.89, 16,174.77 and 6,415.66 is: 8,853.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.89 : 16,174.77 = 6,415.66 : x
  2. Step 2: Convert to fraction form
    11,720.89/16,174.77 = 6,415.66/x
  3. Step 3: Cross multiply
    11,720.89x = 16,174.77 × 6,415.66
  4. Step 4: Simplify right side
    11,720.89x = 103,771,824.90
  5. Step 5: Solve for x
    x = 103,771,824.90/11,720.89
  6. Step 6: Final answer
    x = 8,853.58

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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.