Home / 11,681.69-16,120.17-6,645.44

Finding the Fourth Proportional to 11,681.69, 16,120.17 and 6,645.44

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Solution

The fourth proportional to 11,681.69, 16,120.17 and 6,645.44 is: 9,170.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,681.69 : 16,120.17 = 6,645.44 : x
  2. Step 2: Convert to fraction form
    11,681.69/16,120.17 = 6,645.44/x
  3. Step 3: Cross multiply
    11,681.69x = 16,120.17 × 6,645.44
  4. Step 4: Simplify right side
    11,681.69x = 107,125,572.15
  5. Step 5: Solve for x
    x = 107,125,572.15/11,681.69
  6. Step 6: Final answer
    x = 9,170.38

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Double scale
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Similar ratio
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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.