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Finding the Fourth Proportional to 19,329, 28,990.17 and 5,820.03

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Solution

The fourth proportional to 19,329, 28,990.17 and 5,820.03 is: 8,729.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,329 : 28,990.17 = 5,820.03 : x
  2. Step 2: Convert to fraction form
    19,329/28,990.17 = 5,820.03/x
  3. Step 3: Cross multiply
    19,329x = 28,990.17 × 5,820.03
  4. Step 4: Simplify right side
    19,329x = 168,723,659.11
  5. Step 5: Solve for x
    x = 168,723,659.11/19,329
  6. Step 6: Final answer
    x = 8,729.04

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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.