Home / 13,320.18-19,961.20-9,782.44

Finding the Fourth Proportional to 13,320.18, 19,961.20 and 9,782.44

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Solution

The fourth proportional to 13,320.18, 19,961.20 and 9,782.44 is: 14,659.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.18 : 19,961.20 = 9,782.44 : x
  2. Step 2: Convert to fraction form
    13,320.18/19,961.20 = 9,782.44/x
  3. Step 3: Cross multiply
    13,320.18x = 19,961.20 × 9,782.44
  4. Step 4: Simplify right side
    13,320.18x = 195,269,203.65
  5. Step 5: Solve for x
    x = 195,269,203.65/13,320.18
  6. Step 6: Final answer
    x = 14,659.65

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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.