Home / 21,318.46-31,959.45-8,180.26

Finding the Fourth Proportional to 21,318.46, 31,959.45 and 8,180.26

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Solution

The fourth proportional to 21,318.46, 31,959.45 and 8,180.26 is: 12,263.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,318.46 : 31,959.45 = 8,180.26 : x
  2. Step 2: Convert to fraction form
    21,318.46/31,959.45 = 8,180.26/x
  3. Step 3: Cross multiply
    21,318.46x = 31,959.45 × 8,180.26
  4. Step 4: Simplify right side
    21,318.46x = 261,436,530.56
  5. Step 5: Solve for x
    x = 261,436,530.56/21,318.46
  6. Step 6: Final answer
    x = 12,263.39

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1.5x scale

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.