Home / 15,939.61-21,997.23-8,770.09

Finding the Fourth Proportional to 15,939.61, 21,997.23 and 8,770.09

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Solution

The fourth proportional to 15,939.61, 21,997.23 and 8,770.09 is: 12,103.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.61 : 21,997.23 = 8,770.09 : x
  2. Step 2: Convert to fraction form
    15,939.61/21,997.23 = 8,770.09/x
  3. Step 3: Cross multiply
    15,939.61x = 21,997.23 × 8,770.09
  4. Step 4: Simplify right side
    15,939.61x = 192,917,686.85
  5. Step 5: Solve for x
    x = 192,917,686.85/15,939.61
  6. Step 6: Final answer
    x = 12,103.04

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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.