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Finding the Fourth Proportional to 20,494.80, 30,733.20 and 9,397.80

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Solution

The fourth proportional to 20,494.80, 30,733.20 and 9,397.80 is: 14,092.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.80 : 30,733.20 = 9,397.80 : x
  2. Step 2: Convert to fraction form
    20,494.80/30,733.20 = 9,397.80/x
  3. Step 3: Cross multiply
    20,494.80x = 30,733.20 × 9,397.80
  4. Step 4: Simplify right side
    20,494.80x = 288,824,466.96
  5. Step 5: Solve for x
    x = 288,824,466.96/20,494.80
  6. Step 6: Final answer
    x = 14,092.57

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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.