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Finding the Fourth Proportional to 20,487.26, 30,734.12 and 7,339.34

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Solution

The fourth proportional to 20,487.26, 30,734.12 and 7,339.34 is: 11,010.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,487.26 : 30,734.12 = 7,339.34 : x
  2. Step 2: Convert to fraction form
    20,487.26/30,734.12 = 7,339.34/x
  3. Step 3: Cross multiply
    20,487.26x = 30,734.12 × 7,339.34
  4. Step 4: Simplify right side
    20,487.26x = 225,567,965.91
  5. Step 5: Solve for x
    x = 225,567,965.91/20,487.26
  6. Step 6: Final answer
    x = 11,010.16

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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.