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Finding the Fourth Proportional to 13,463.80, 20,195.70 and 12,254.20

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Solution

The fourth proportional to 13,463.80, 20,195.70 and 12,254.20 is: 18,381.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,463.80 : 20,195.70 = 12,254.20 : x
  2. Step 2: Convert to fraction form
    13,463.80/20,195.70 = 12,254.20/x
  3. Step 3: Cross multiply
    13,463.80x = 20,195.70 × 12,254.20
  4. Step 4: Simplify right side
    13,463.80x = 247,482,146.94
  5. Step 5: Solve for x
    x = 247,482,146.94/13,463.80
  6. Step 6: Final answer
    x = 18,381.30

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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.