Home / 19,765.53-29,650.37-6,439.56

Finding the Fourth Proportional to 19,765.53, 29,650.37 and 6,439.56

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Solution

The fourth proportional to 19,765.53, 29,650.37 and 6,439.56 is: 9,660.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,765.53 : 29,650.37 = 6,439.56 : x
  2. Step 2: Convert to fraction form
    19,765.53/29,650.37 = 6,439.56/x
  3. Step 3: Cross multiply
    19,765.53x = 29,650.37 × 6,439.56
  4. Step 4: Simplify right side
    19,765.53x = 190,935,336.64
  5. Step 5: Solve for x
    x = 190,935,336.64/19,765.53
  6. Step 6: Final answer
    x = 9,660.02

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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.