Home / 13,553.25-20,353.15-8,319

Finding the Fourth Proportional to 13,553.25, 20,353.15 and 8,319

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Solution

The fourth proportional to 13,553.25, 20,353.15 and 8,319 is: 12,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.25 : 20,353.15 = 8,319 : x
  2. Step 2: Convert to fraction form
    13,553.25/20,353.15 = 8,319/x
  3. Step 3: Cross multiply
    13,553.25x = 20,353.15 × 8,319
  4. Step 4: Simplify right side
    13,553.25x = 169,317,818.45
  5. Step 5: Solve for x
    x = 169,317,818.45/13,553.25
  6. Step 6: Final answer
    x = 12,492.78

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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.