Home / 22,553.31-31,121.64-12,481.77

Finding the Fourth Proportional to 22,553.31, 31,121.64 and 12,481.77

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Solution

The fourth proportional to 22,553.31, 31,121.64 and 12,481.77 is: 17,223.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,553.31 : 31,121.64 = 12,481.77 : x
  2. Step 2: Convert to fraction form
    22,553.31/31,121.64 = 12,481.77/x
  3. Step 3: Cross multiply
    22,553.31x = 31,121.64 × 12,481.77
  4. Step 4: Simplify right side
    22,553.31x = 388,453,152.50
  5. Step 5: Solve for x
    x = 388,453,152.50/22,553.31
  6. Step 6: Final answer
    x = 17,223.78

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1.5x scale

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.