Home / 21,144.24-31,722.60-6,355.44

Finding the Fourth Proportional to 21,144.24, 31,722.60 and 6,355.44

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Solution

The fourth proportional to 21,144.24, 31,722.60 and 6,355.44 is: 9,535.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.24 : 31,722.60 = 6,355.44 : x
  2. Step 2: Convert to fraction form
    21,144.24/31,722.60 = 6,355.44/x
  3. Step 3: Cross multiply
    21,144.24x = 31,722.60 × 6,355.44
  4. Step 4: Simplify right side
    21,144.24x = 201,611,080.94
  5. Step 5: Solve for x
    x = 201,611,080.94/21,144.24
  6. Step 6: Final answer
    x = 9,535.04

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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.