Home / 20,949.10-31,433.89-9,856.89

Finding the Fourth Proportional to 20,949.10, 31,433.89 and 9,856.89

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Solution

The fourth proportional to 20,949.10, 31,433.89 and 9,856.89 is: 14,790.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,949.10 : 31,433.89 = 9,856.89 : x
  2. Step 2: Convert to fraction form
    20,949.10/31,433.89 = 9,856.89/x
  3. Step 3: Cross multiply
    20,949.10x = 31,433.89 × 9,856.89
  4. Step 4: Simplify right side
    20,949.10x = 309,840,396.00
  5. Step 5: Solve for x
    x = 309,840,396.00/20,949.10
  6. Step 6: Final answer
    x = 14,790.15

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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.