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Finding the Fourth Proportional to 18,324, 27,439.48 and 15,354.63

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Solution

The fourth proportional to 18,324, 27,439.48 and 15,354.63 is: 22,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,324 : 27,439.48 = 15,354.63 : x
  2. Step 2: Convert to fraction form
    18,324/27,439.48 = 15,354.63/x
  3. Step 3: Cross multiply
    18,324x = 27,439.48 × 15,354.63
  4. Step 4: Simplify right side
    18,324x = 421,323,081.99
  5. Step 5: Solve for x
    x = 421,323,081.99/18,324
  6. Step 6: Final answer
    x = 22,992.96

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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.