Home / 11,721.03-16,174.99-6,415.80

Finding the Fourth Proportional to 11,721.03, 16,174.99 and 6,415.80

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Solution

The fourth proportional to 11,721.03, 16,174.99 and 6,415.80 is: 8,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.03 : 16,174.99 = 6,415.80 : x
  2. Step 2: Convert to fraction form
    11,721.03/16,174.99 = 6,415.80/x
  3. Step 3: Cross multiply
    11,721.03x = 16,174.99 × 6,415.80
  4. Step 4: Simplify right side
    11,721.03x = 103,775,500.84
  5. Step 5: Solve for x
    x = 103,775,500.84/11,721.03
  6. Step 6: Final answer
    x = 8,853.79

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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.