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Finding the Fourth Proportional to 20,636.68, 30,941.26 and 7,487.34

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Solution

The fourth proportional to 20,636.68, 30,941.26 and 7,487.34 is: 11,226.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.68 : 30,941.26 = 7,487.34 : x
  2. Step 2: Convert to fraction form
    20,636.68/30,941.26 = 7,487.34/x
  3. Step 3: Cross multiply
    20,636.68x = 30,941.26 × 7,487.34
  4. Step 4: Simplify right side
    20,636.68x = 231,667,733.65
  5. Step 5: Solve for x
    x = 231,667,733.65/20,636.68
  6. Step 6: Final answer
    x = 11,226.02

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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.