Home / 12,997.76-19,496.64-3,765.12

Finding the Fourth Proportional to 12,997.76, 19,496.64 and 3,765.12

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Solution

The fourth proportional to 12,997.76, 19,496.64 and 3,765.12 is: 5,647.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997.76 : 19,496.64 = 3,765.12 : x
  2. Step 2: Convert to fraction form
    12,997.76/19,496.64 = 3,765.12/x
  3. Step 3: Cross multiply
    12,997.76x = 19,496.64 × 3,765.12
  4. Step 4: Simplify right side
    12,997.76x = 73,407,189.20
  5. Step 5: Solve for x
    x = 73,407,189.20/12,997.76
  6. Step 6: Final answer
    x = 5,647.68

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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.