Home / 21,176.70-31,760.41-8,684.43

Finding the Fourth Proportional to 21,176.70, 31,760.41 and 8,684.43

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Solution

The fourth proportional to 21,176.70, 31,760.41 and 8,684.43 is: 13,024.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,176.70 : 31,760.41 = 8,684.43 : x
  2. Step 2: Convert to fraction form
    21,176.70/31,760.41 = 8,684.43/x
  3. Step 3: Cross multiply
    21,176.70x = 31,760.41 × 8,684.43
  4. Step 4: Simplify right side
    21,176.70x = 275,821,057.42
  5. Step 5: Solve for x
    x = 275,821,057.42/21,176.70
  6. Step 6: Final answer
    x = 13,024.74

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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.