Home / 18,982.61-28,474.69-6,511.21

Finding the Fourth Proportional to 18,982.61, 28,474.69 and 6,511.21

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Solution

The fourth proportional to 18,982.61, 28,474.69 and 6,511.21 is: 9,767.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,982.61 : 28,474.69 = 6,511.21 : x
  2. Step 2: Convert to fraction form
    18,982.61/28,474.69 = 6,511.21/x
  3. Step 3: Cross multiply
    18,982.61x = 28,474.69 × 6,511.21
  4. Step 4: Simplify right side
    18,982.61x = 185,404,543.90
  5. Step 5: Solve for x
    x = 185,404,543.90/18,982.61
  6. Step 6: Final answer
    x = 9,767.08

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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.