Home / 19,986.18-29,979.75-6,838.46

Finding the Fourth Proportional to 19,986.18, 29,979.75 and 6,838.46

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Solution

The fourth proportional to 19,986.18, 29,979.75 and 6,838.46 is: 10,257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,986.18 : 29,979.75 = 6,838.46 : x
  2. Step 2: Convert to fraction form
    19,986.18/29,979.75 = 6,838.46/x
  3. Step 3: Cross multiply
    19,986.18x = 29,979.75 × 6,838.46
  4. Step 4: Simplify right side
    19,986.18x = 205,015,321.19
  5. Step 5: Solve for x
    x = 205,015,321.19/19,986.18
  6. Step 6: Final answer
    x = 10,257.85

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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.