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Finding the Fourth Proportional to 20,492.57, 30,723.26 and 8,649.97

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Solution

The fourth proportional to 20,492.57, 30,723.26 and 8,649.97 is: 12,968.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.57 : 30,723.26 = 8,649.97 : x
  2. Step 2: Convert to fraction form
    20,492.57/30,723.26 = 8,649.97/x
  3. Step 3: Cross multiply
    20,492.57x = 30,723.26 × 8,649.97
  4. Step 4: Simplify right side
    20,492.57x = 265,755,123.69
  5. Step 5: Solve for x
    x = 265,755,123.69/20,492.57
  6. Step 6: Final answer
    x = 12,968.36

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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.