Home / 12,516.72-18,772.36-3,749.28

Finding the Fourth Proportional to 12,516.72, 18,772.36 and 3,749.28

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Solution

The fourth proportional to 12,516.72, 18,772.36 and 3,749.28 is: 5,623.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.72 : 18,772.36 = 3,749.28 : x
  2. Step 2: Convert to fraction form
    12,516.72/18,772.36 = 3,749.28/x
  3. Step 3: Cross multiply
    12,516.72x = 18,772.36 × 3,749.28
  4. Step 4: Simplify right side
    12,516.72x = 70,382,833.90
  5. Step 5: Solve for x
    x = 70,382,833.90/12,516.72
  6. Step 6: Final answer
    x = 5,623.11

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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.