Home / 21,399.45-29,532.68-11,968

Finding the Fourth Proportional to 21,399.45, 29,532.68 and 11,968

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Solution

The fourth proportional to 21,399.45, 29,532.68 and 11,968 is: 16,516.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.45 : 29,532.68 = 11,968 : x
  2. Step 2: Convert to fraction form
    21,399.45/29,532.68 = 11,968/x
  3. Step 3: Cross multiply
    21,399.45x = 29,532.68 × 11,968
  4. Step 4: Simplify right side
    21,399.45x = 353,447,114.24
  5. Step 5: Solve for x
    x = 353,447,114.24/21,399.45
  6. Step 6: Final answer
    x = 16,516.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.