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Finding the Fourth Proportional to 36,806.61, 55,208.79 and 10,511.40

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Solution

The fourth proportional to 36,806.61, 55,208.79 and 10,511.40 is: 15,766.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,806.61 : 55,208.79 = 10,511.40 : x
  2. Step 2: Convert to fraction form
    36,806.61/55,208.79 = 10,511.40/x
  3. Step 3: Cross multiply
    36,806.61x = 55,208.79 × 10,511.40
  4. Step 4: Simplify right side
    36,806.61x = 580,321,675.21
  5. Step 5: Solve for x
    x = 580,321,675.21/36,806.61
  6. Step 6: Final answer
    x = 15,766.78

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1.5x scale

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.