Home / 13,320.18-19,982.43-4,086.18

Finding the Fourth Proportional to 13,320.18, 19,982.43 and 4,086.18

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Solution

The fourth proportional to 13,320.18, 19,982.43 and 4,086.18 is: 6,129.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.18 : 19,982.43 = 4,086.18 : x
  2. Step 2: Convert to fraction form
    13,320.18/19,982.43 = 4,086.18/x
  3. Step 3: Cross multiply
    13,320.18x = 19,982.43 × 4,086.18
  4. Step 4: Simplify right side
    13,320.18x = 81,651,805.82
  5. Step 5: Solve for x
    x = 81,651,805.82/13,320.18
  6. Step 6: Final answer
    x = 6,129.93

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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.