Home / 11,721.05-16,175.03-6,415.86

Finding the Fourth Proportional to 11,721.05, 16,175.03 and 6,415.86

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Solution

The fourth proportional to 11,721.05, 16,175.03 and 6,415.86 is: 8,853.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.05 : 16,175.03 = 6,415.86 : x
  2. Step 2: Convert to fraction form
    11,721.05/16,175.03 = 6,415.86/x
  3. Step 3: Cross multiply
    11,721.05x = 16,175.03 × 6,415.86
  4. Step 4: Simplify right side
    11,721.05x = 103,776,695.90
  5. Step 5: Solve for x
    x = 103,776,695.90/11,721.05
  6. Step 6: Final answer
    x = 8,853.88

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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.