Home / 13,325.20-19,987.96-3,965

Finding the Fourth Proportional to 13,325.20, 19,987.96 and 3,965

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Solution

The fourth proportional to 13,325.20, 19,987.96 and 3,965 is: 5,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,325.20 : 19,987.96 = 3,965 : x
  2. Step 2: Convert to fraction form
    13,325.20/19,987.96 = 3,965/x
  3. Step 3: Cross multiply
    13,325.20x = 19,987.96 × 3,965
  4. Step 4: Simplify right side
    13,325.20x = 79,252,261.40
  5. Step 5: Solve for x
    x = 79,252,261.40/13,325.20
  6. Step 6: Final answer
    x = 5,947.55

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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.