Home / 21,815.24-32,718-10,122.08

Finding the Fourth Proportional to 21,815.24, 32,718 and 10,122.08

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Solution

The fourth proportional to 21,815.24, 32,718 and 10,122.08 is: 15,180.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,815.24 : 32,718 = 10,122.08 : x
  2. Step 2: Convert to fraction form
    21,815.24/32,718 = 10,122.08/x
  3. Step 3: Cross multiply
    21,815.24x = 32,718 × 10,122.08
  4. Step 4: Simplify right side
    21,815.24x = 331,174,213.44
  5. Step 5: Solve for x
    x = 331,174,213.44/21,815.24
  6. Step 6: Final answer
    x = 15,180.87

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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.