Home / 12,680.10-19,021.32-3,917.52

Finding the Fourth Proportional to 12,680.10, 19,021.32 and 3,917.52

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Solution

The fourth proportional to 12,680.10, 19,021.32 and 3,917.52 is: 5,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,680.10 : 19,021.32 = 3,917.52 : x
  2. Step 2: Convert to fraction form
    12,680.10/19,021.32 = 3,917.52/x
  3. Step 3: Cross multiply
    12,680.10x = 19,021.32 × 3,917.52
  4. Step 4: Simplify right side
    12,680.10x = 74,516,401.53
  5. Step 5: Solve for x
    x = 74,516,401.53/12,680.10
  6. Step 6: Final answer
    x = 5,876.64

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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.