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Finding the Fourth Proportional to 20,456.62, 30,684.96 and 6,225.22

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Solution

The fourth proportional to 20,456.62, 30,684.96 and 6,225.22 is: 9,337.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.62 : 30,684.96 = 6,225.22 : x
  2. Step 2: Convert to fraction form
    20,456.62/30,684.96 = 6,225.22/x
  3. Step 3: Cross multiply
    20,456.62x = 30,684.96 × 6,225.22
  4. Step 4: Simplify right side
    20,456.62x = 191,020,626.69
  5. Step 5: Solve for x
    x = 191,020,626.69/20,456.62
  6. Step 6: Final answer
    x = 9,337.84

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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.