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Finding the Fourth Proportional to 13,912.32, 20,862 and 6,006.72

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Solution

The fourth proportional to 13,912.32, 20,862 and 6,006.72 is: 9,007.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.32 : 20,862 = 6,006.72 : x
  2. Step 2: Convert to fraction form
    13,912.32/20,862 = 6,006.72/x
  3. Step 3: Cross multiply
    13,912.32x = 20,862 × 6,006.72
  4. Step 4: Simplify right side
    13,912.32x = 125,312,192.64
  5. Step 5: Solve for x
    x = 125,312,192.64/13,912.32
  6. Step 6: Final answer
    x = 9,007.28

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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.