Home / 11,325.78-16,981.94-4,306.30

Finding the Fourth Proportional to 11,325.78, 16,981.94 and 4,306.30

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Solution

The fourth proportional to 11,325.78, 16,981.94 and 4,306.30 is: 6,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.78 : 16,981.94 = 4,306.30 : x
  2. Step 2: Convert to fraction form
    11,325.78/16,981.94 = 4,306.30/x
  3. Step 3: Cross multiply
    11,325.78x = 16,981.94 × 4,306.30
  4. Step 4: Simplify right side
    11,325.78x = 73,129,359.76
  5. Step 5: Solve for x
    x = 73,129,359.76/11,325.78
  6. Step 6: Final answer
    x = 6,456.90

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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.