Home / 12,415.39-17,136.87-7,383.15

Finding the Fourth Proportional to 12,415.39, 17,136.87 and 7,383.15

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Solution

The fourth proportional to 12,415.39, 17,136.87 and 7,383.15 is: 10,190.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.39 : 17,136.87 = 7,383.15 : x
  2. Step 2: Convert to fraction form
    12,415.39/17,136.87 = 7,383.15/x
  3. Step 3: Cross multiply
    12,415.39x = 17,136.87 × 7,383.15
  4. Step 4: Simplify right side
    12,415.39x = 126,524,081.74
  5. Step 5: Solve for x
    x = 126,524,081.74/12,415.39
  6. Step 6: Final answer
    x = 10,190.91

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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.