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Finding the Fourth Proportional to 20,402.56, 30,600.36 and 5,608

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Solution

The fourth proportional to 20,402.56, 30,600.36 and 5,608 is: 8,411.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.56 : 30,600.36 = 5,608 : x
  2. Step 2: Convert to fraction form
    20,402.56/30,600.36 = 5,608/x
  3. Step 3: Cross multiply
    20,402.56x = 30,600.36 × 5,608
  4. Step 4: Simplify right side
    20,402.56x = 171,606,818.88
  5. Step 5: Solve for x
    x = 171,606,818.88/20,402.56
  6. Step 6: Final answer
    x = 8,411.04

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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.