Home / 18,511.20-27,766.80-5,364.90

Finding the Fourth Proportional to 18,511.20, 27,766.80 and 5,364.90

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Solution

The fourth proportional to 18,511.20, 27,766.80 and 5,364.90 is: 8,047.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,511.20 : 27,766.80 = 5,364.90 : x
  2. Step 2: Convert to fraction form
    18,511.20/27,766.80 = 5,364.90/x
  3. Step 3: Cross multiply
    18,511.20x = 27,766.80 × 5,364.90
  4. Step 4: Simplify right side
    18,511.20x = 148,966,105.32
  5. Step 5: Solve for x
    x = 148,966,105.32/18,511.20
  6. Step 6: Final answer
    x = 8,047.35

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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.