Home / 13,129.40-19,695.09-3,769.35

Finding the Fourth Proportional to 13,129.40, 19,695.09 and 3,769.35

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Solution

The fourth proportional to 13,129.40, 19,695.09 and 3,769.35 is: 5,654.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.40 : 19,695.09 = 3,769.35 : x
  2. Step 2: Convert to fraction form
    13,129.40/19,695.09 = 3,769.35/x
  3. Step 3: Cross multiply
    13,129.40x = 19,695.09 × 3,769.35
  4. Step 4: Simplify right side
    13,129.40x = 74,237,589.02
  5. Step 5: Solve for x
    x = 74,237,589.02/13,129.40
  6. Step 6: Final answer
    x = 5,654.30

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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.