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Finding the Fourth Proportional to 10,686, 16,029.04 and 3,390

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Solution

The fourth proportional to 10,686, 16,029.04 and 3,390 is: 5,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,686 : 16,029.04 = 3,390 : x
  2. Step 2: Convert to fraction form
    10,686/16,029.04 = 3,390/x
  3. Step 3: Cross multiply
    10,686x = 16,029.04 × 3,390
  4. Step 4: Simplify right side
    10,686x = 54,338,445.60
  5. Step 5: Solve for x
    x = 54,338,445.60/10,686
  6. Step 6: Final answer
    x = 5,085.01

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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.