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Finding the Fourth Proportional to 20,492.68, 30,764.22 and 19,459.72

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Solution

The fourth proportional to 20,492.68, 30,764.22 and 19,459.72 is: 29,213.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,492.68 : 30,764.22 = 19,459.72 : x
  2. Step 2: Convert to fraction form
    20,492.68/30,764.22 = 19,459.72/x
  3. Step 3: Cross multiply
    20,492.68x = 30,764.22 × 19,459.72
  4. Step 4: Simplify right side
    20,492.68x = 598,663,107.22
  5. Step 5: Solve for x
    x = 598,663,107.22/20,492.68
  6. Step 6: Final answer
    x = 29,213.51

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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.