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Finding the Fourth Proportional to 12,325.91, 18,489.42 and 4,530.47

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Solution

The fourth proportional to 12,325.91, 18,489.42 and 4,530.47 is: 6,795.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,325.91 : 18,489.42 = 4,530.47 : x
  2. Step 2: Convert to fraction form
    12,325.91/18,489.42 = 4,530.47/x
  3. Step 3: Cross multiply
    12,325.91x = 18,489.42 × 4,530.47
  4. Step 4: Simplify right side
    12,325.91x = 83,765,670.18
  5. Step 5: Solve for x
    x = 83,765,670.18/12,325.91
  6. Step 6: Final answer
    x = 6,795.90

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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.