Home / 21,961.30-32,945.15-7,166.58

Finding the Fourth Proportional to 21,961.30, 32,945.15 and 7,166.58

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Solution

The fourth proportional to 21,961.30, 32,945.15 and 7,166.58 is: 10,750.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.30 : 32,945.15 = 7,166.58 : x
  2. Step 2: Convert to fraction form
    21,961.30/32,945.15 = 7,166.58/x
  3. Step 3: Cross multiply
    21,961.30x = 32,945.15 × 7,166.58
  4. Step 4: Simplify right side
    21,961.30x = 236,104,053.09
  5. Step 5: Solve for x
    x = 236,104,053.09/21,961.30
  6. Step 6: Final answer
    x = 10,750.91

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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.