Home / 21,761.70-30,008.34-16,108.31

Finding the Fourth Proportional to 21,761.70, 30,008.34 and 16,108.31

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Solution

The fourth proportional to 21,761.70, 30,008.34 and 16,108.31 is: 22,212.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761.70 : 30,008.34 = 16,108.31 : x
  2. Step 2: Convert to fraction form
    21,761.70/30,008.34 = 16,108.31/x
  3. Step 3: Cross multiply
    21,761.70x = 30,008.34 × 16,108.31
  4. Step 4: Simplify right side
    21,761.70x = 483,383,493.26
  5. Step 5: Solve for x
    x = 483,383,493.26/21,761.70
  6. Step 6: Final answer
    x = 22,212.58

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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.