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Finding the Fourth Proportional to 20,402.96, 30,600.12 and 6,548.72

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Solution

The fourth proportional to 20,402.96, 30,600.12 and 6,548.72 is: 9,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.96 : 30,600.12 = 6,548.72 : x
  2. Step 2: Convert to fraction form
    20,402.96/30,600.12 = 6,548.72/x
  3. Step 3: Cross multiply
    20,402.96x = 30,600.12 × 6,548.72
  4. Step 4: Simplify right side
    20,402.96x = 200,391,617.85
  5. Step 5: Solve for x
    x = 200,391,617.85/20,402.96
  6. Step 6: Final answer
    x = 9,821.69

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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.