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Finding the Fourth Proportional to 15,105.19, 20,843.66 and 9,053.83

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Solution

The fourth proportional to 15,105.19, 20,843.66 and 9,053.83 is: 12,493.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,105.19 : 20,843.66 = 9,053.83 : x
  2. Step 2: Convert to fraction form
    15,105.19/20,843.66 = 9,053.83/x
  3. Step 3: Cross multiply
    15,105.19x = 20,843.66 × 9,053.83
  4. Step 4: Simplify right side
    15,105.19x = 188,714,954.22
  5. Step 5: Solve for x
    x = 188,714,954.22/15,105.19
  6. Step 6: Final answer
    x = 12,493.39

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Half scale
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Double scale
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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.