Home / 19,890.81-29,844.14-8,201.30

Finding the Fourth Proportional to 19,890.81, 29,844.14 and 8,201.30

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Solution

The fourth proportional to 19,890.81, 29,844.14 and 8,201.30 is: 12,305.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,890.81 : 29,844.14 = 8,201.30 : x
  2. Step 2: Convert to fraction form
    19,890.81/29,844.14 = 8,201.30/x
  3. Step 3: Cross multiply
    19,890.81x = 29,844.14 × 8,201.30
  4. Step 4: Simplify right side
    19,890.81x = 244,760,555.15
  5. Step 5: Solve for x
    x = 244,760,555.15/19,890.81
  6. Step 6: Final answer
    x = 12,305.21

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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.