Home / 13,219.98-18,243.57-7,251.69

Finding the Fourth Proportional to 13,219.98, 18,243.57 and 7,251.69

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Solution

The fourth proportional to 13,219.98, 18,243.57 and 7,251.69 is: 10,007.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.98 : 18,243.57 = 7,251.69 : x
  2. Step 2: Convert to fraction form
    13,219.98/18,243.57 = 7,251.69/x
  3. Step 3: Cross multiply
    13,219.98x = 18,243.57 × 7,251.69
  4. Step 4: Simplify right side
    13,219.98x = 132,296,714.13
  5. Step 5: Solve for x
    x = 132,296,714.13/13,219.98
  6. Step 6: Final answer
    x = 10,007.33

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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.