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Finding the Fourth Proportional to 10,353.76, 15,489.84 and 7,995.44

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Solution

The fourth proportional to 10,353.76, 15,489.84 and 7,995.44 is: 11,961.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,353.76 : 15,489.84 = 7,995.44 : x
  2. Step 2: Convert to fraction form
    10,353.76/15,489.84 = 7,995.44/x
  3. Step 3: Cross multiply
    10,353.76x = 15,489.84 × 7,995.44
  4. Step 4: Simplify right side
    10,353.76x = 123,848,086.33
  5. Step 5: Solve for x
    x = 123,848,086.33/10,353.76
  6. Step 6: Final answer
    x = 11,961.65

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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.