Home / 13,829.13-20,743.09-6,431.00

Finding the Fourth Proportional to 13,829.13, 20,743.09 and 6,431.00

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Solution

The fourth proportional to 13,829.13, 20,743.09 and 6,431.00 is: 9,646.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,829.13 : 20,743.09 = 6,431.00 : x
  2. Step 2: Convert to fraction form
    13,829.13/20,743.09 = 6,431.00/x
  3. Step 3: Cross multiply
    13,829.13x = 20,743.09 × 6,431.00
  4. Step 4: Simplify right side
    13,829.13x = 133,398,692.00
  5. Step 5: Solve for x
    x = 133,398,692.00/13,829.13
  6. Step 6: Final answer
    x = 9,646.21

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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.