Home / 13,553.23-20,330-4,781.99

Finding the Fourth Proportional to 13,553.23, 20,330 and 4,781.99

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Solution

The fourth proportional to 13,553.23, 20,330 and 4,781.99 is: 7,173.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.23 : 20,330 = 4,781.99 : x
  2. Step 2: Convert to fraction form
    13,553.23/20,330 = 4,781.99/x
  3. Step 3: Cross multiply
    13,553.23x = 20,330 × 4,781.99
  4. Step 4: Simplify right side
    13,553.23x = 97,217,856.70
  5. Step 5: Solve for x
    x = 97,217,856.70/13,553.23
  6. Step 6: Final answer
    x = 7,173.04

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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.