Home / 14,120.82-21,195-6,730.38

Finding the Fourth Proportional to 14,120.82, 21,195 and 6,730.38

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Solution

The fourth proportional to 14,120.82, 21,195 and 6,730.38 is: 10,102.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.82 : 21,195 = 6,730.38 : x
  2. Step 2: Convert to fraction form
    14,120.82/21,195 = 6,730.38/x
  3. Step 3: Cross multiply
    14,120.82x = 21,195 × 6,730.38
  4. Step 4: Simplify right side
    14,120.82x = 142,650,404.10
  5. Step 5: Solve for x
    x = 142,650,404.10/14,120.82
  6. Step 6: Final answer
    x = 10,102.13

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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.