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Finding the Fourth Proportional to 13,593.96, 20,385.50 and 4,230.90

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Solution

The fourth proportional to 13,593.96, 20,385.50 and 4,230.90 is: 6,344.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,593.96 : 20,385.50 = 4,230.90 : x
  2. Step 2: Convert to fraction form
    13,593.96/20,385.50 = 4,230.90/x
  3. Step 3: Cross multiply
    13,593.96x = 20,385.50 × 4,230.90
  4. Step 4: Simplify right side
    13,593.96x = 86,248,990.80
  5. Step 5: Solve for x
    x = 86,248,990.80/13,593.96
  6. Step 6: Final answer
    x = 6,344.66

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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.