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Finding the Fourth Proportional to 18,323.82, 25,287.39 and 11,151.54

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Solution

The fourth proportional to 18,323.82, 25,287.39 and 11,151.54 is: 15,389.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,323.82 : 25,287.39 = 11,151.54 : x
  2. Step 2: Convert to fraction form
    18,323.82/25,287.39 = 11,151.54/x
  3. Step 3: Cross multiply
    18,323.82x = 25,287.39 × 11,151.54
  4. Step 4: Simplify right side
    18,323.82x = 281,993,341.08
  5. Step 5: Solve for x
    x = 281,993,341.08/18,323.82
  6. Step 6: Final answer
    x = 15,389.44

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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.