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Finding the Fourth Proportional to 18,230.30, 27,345.45 and 11,663.90

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Solution

The fourth proportional to 18,230.30, 27,345.45 and 11,663.90 is: 17,495.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,230.30 : 27,345.45 = 11,663.90 : x
  2. Step 2: Convert to fraction form
    18,230.30/27,345.45 = 11,663.90/x
  3. Step 3: Cross multiply
    18,230.30x = 27,345.45 × 11,663.90
  4. Step 4: Simplify right side
    18,230.30x = 318,954,594.26
  5. Step 5: Solve for x
    x = 318,954,594.26/18,230.30
  6. Step 6: Final answer
    x = 17,495.85

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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.