Home / 15,939.82-21,997.48-8,770.02

Finding the Fourth Proportional to 15,939.82, 21,997.48 and 8,770.02

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Solution

The fourth proportional to 15,939.82, 21,997.48 and 8,770.02 is: 12,102.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,939.82 : 21,997.48 = 8,770.02 : x
  2. Step 2: Convert to fraction form
    15,939.82/21,997.48 = 8,770.02/x
  3. Step 3: Cross multiply
    15,939.82x = 21,997.48 × 8,770.02
  4. Step 4: Simplify right side
    15,939.82x = 192,918,339.55
  5. Step 5: Solve for x
    x = 192,918,339.55/15,939.82
  6. Step 6: Final answer
    x = 12,102.92

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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.