Home / 10,686.30-16,029.81-3,290.70

Finding the Fourth Proportional to 10,686.30, 16,029.81 and 3,290.70

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Solution

The fourth proportional to 10,686.30, 16,029.81 and 3,290.70 is: 4,936.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,686.30 : 16,029.81 = 3,290.70 : x
  2. Step 2: Convert to fraction form
    10,686.30/16,029.81 = 3,290.70/x
  3. Step 3: Cross multiply
    10,686.30x = 16,029.81 × 3,290.70
  4. Step 4: Simplify right side
    10,686.30x = 52,749,295.77
  5. Step 5: Solve for x
    x = 52,749,295.77/10,686.30
  6. Step 6: Final answer
    x = 4,936.16

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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.