Home / 21,299.82-31,948.30-8,816.64

Finding the Fourth Proportional to 21,299.82, 31,948.30 and 8,816.64

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Solution

The fourth proportional to 21,299.82, 31,948.30 and 8,816.64 is: 13,224.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.82 : 31,948.30 = 8,816.64 : x
  2. Step 2: Convert to fraction form
    21,299.82/31,948.30 = 8,816.64/x
  3. Step 3: Cross multiply
    21,299.82x = 31,948.30 × 8,816.64
  4. Step 4: Simplify right side
    21,299.82x = 281,676,659.71
  5. Step 5: Solve for x
    x = 281,676,659.71/21,299.82
  6. Step 6: Final answer
    x = 13,224.37

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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.