Home / 21,845.60-32,770.80-7,997.60

Finding the Fourth Proportional to 21,845.60, 32,770.80 and 7,997.60

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Solution

The fourth proportional to 21,845.60, 32,770.80 and 7,997.60 is: 11,997.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.60 : 32,770.80 = 7,997.60 : x
  2. Step 2: Convert to fraction form
    21,845.60/32,770.80 = 7,997.60/x
  3. Step 3: Cross multiply
    21,845.60x = 32,770.80 × 7,997.60
  4. Step 4: Simplify right side
    21,845.60x = 262,087,750.08
  5. Step 5: Solve for x
    x = 262,087,750.08/21,845.60
  6. Step 6: Final answer
    x = 11,997.28

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1.5x scale

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.