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Finding the Fourth Proportional to 18,508.20, 27,749.99 and 10,192.13

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Solution

The fourth proportional to 18,508.20, 27,749.99 and 10,192.13 is: 15,281.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.20 : 27,749.99 = 10,192.13 : x
  2. Step 2: Convert to fraction form
    18,508.20/27,749.99 = 10,192.13/x
  3. Step 3: Cross multiply
    18,508.20x = 27,749.99 × 10,192.13
  4. Step 4: Simplify right side
    18,508.20x = 282,831,496.37
  5. Step 5: Solve for x
    x = 282,831,496.37/18,508.20
  6. Step 6: Final answer
    x = 15,281.42

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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.