Home / 21,269.87-31,904.82-8,776.17

Finding the Fourth Proportional to 21,269.87, 31,904.82 and 8,776.17

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Solution

The fourth proportional to 21,269.87, 31,904.82 and 8,776.17 is: 13,164.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.87 : 31,904.82 = 8,776.17 : x
  2. Step 2: Convert to fraction form
    21,269.87/31,904.82 = 8,776.17/x
  3. Step 3: Cross multiply
    21,269.87x = 31,904.82 × 8,776.17
  4. Step 4: Simplify right side
    21,269.87x = 280,002,099.46
  5. Step 5: Solve for x
    x = 280,002,099.46/21,269.87
  6. Step 6: Final answer
    x = 13,164.26

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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.