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Finding the Fourth Proportional to 18,143.69, 27,215.13 and 4,995.77

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Solution

The fourth proportional to 18,143.69, 27,215.13 and 4,995.77 is: 7,493.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,143.69 : 27,215.13 = 4,995.77 : x
  2. Step 2: Convert to fraction form
    18,143.69/27,215.13 = 4,995.77/x
  3. Step 3: Cross multiply
    18,143.69x = 27,215.13 × 4,995.77
  4. Step 4: Simplify right side
    18,143.69x = 135,960,530.00
  5. Step 5: Solve for x
    x = 135,960,530.00/18,143.69
  6. Step 6: Final answer
    x = 7,493.54

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Half scale
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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.