Home / 13,185.48-18,195.78-7,217.04

Finding the Fourth Proportional to 13,185.48, 18,195.78 and 7,217.04

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Solution

The fourth proportional to 13,185.48, 18,195.78 and 7,217.04 is: 9,959.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.48 : 18,195.78 = 7,217.04 : x
  2. Step 2: Convert to fraction form
    13,185.48/18,195.78 = 7,217.04/x
  3. Step 3: Cross multiply
    13,185.48x = 18,195.78 × 7,217.04
  4. Step 4: Simplify right side
    13,185.48x = 131,319,672.09
  5. Step 5: Solve for x
    x = 131,319,672.09/13,185.48
  6. Step 6: Final answer
    x = 9,959.42

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