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Finding the Fourth Proportional to 18,743.92, 28,101.99 and 11,346.63

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Solution

The fourth proportional to 18,743.92, 28,101.99 and 11,346.63 is: 17,011.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.92 : 28,101.99 = 11,346.63 : x
  2. Step 2: Convert to fraction form
    18,743.92/28,101.99 = 11,346.63/x
  3. Step 3: Cross multiply
    18,743.92x = 28,101.99 × 11,346.63
  4. Step 4: Simplify right side
    18,743.92x = 318,862,756.14
  5. Step 5: Solve for x
    x = 318,862,756.14/18,743.92
  6. Step 6: Final answer
    x = 17,011.53

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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.