Home / 20,147.64-30,201.21-7,664.46

Finding the Fourth Proportional to 20,147.64, 30,201.21 and 7,664.46

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Solution

The fourth proportional to 20,147.64, 30,201.21 and 7,664.46 is: 11,488.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.64 : 30,201.21 = 7,664.46 : x
  2. Step 2: Convert to fraction form
    20,147.64/30,201.21 = 7,664.46/x
  3. Step 3: Cross multiply
    20,147.64x = 30,201.21 × 7,664.46
  4. Step 4: Simplify right side
    20,147.64x = 231,475,966.00
  5. Step 5: Solve for x
    x = 231,475,966.00/20,147.64
  6. Step 6: Final answer
    x = 11,488.99

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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.