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Finding the Fourth Proportional to 18,329, 27,501.29 and 12,412.56

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Solution

The fourth proportional to 18,329, 27,501.29 and 12,412.56 is: 18,624.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,329 : 27,501.29 = 12,412.56 : x
  2. Step 2: Convert to fraction form
    18,329/27,501.29 = 12,412.56/x
  3. Step 3: Cross multiply
    18,329x = 27,501.29 × 12,412.56
  4. Step 4: Simplify right side
    18,329x = 341,361,412.20
  5. Step 5: Solve for x
    x = 341,361,412.20/18,329
  6. Step 6: Final answer
    x = 18,624.12

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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.