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Finding the Fourth Proportional to 13,941.80, 20,912.70 and 9,268.10

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Solution

The fourth proportional to 13,941.80, 20,912.70 and 9,268.10 is: 13,902.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,941.80 : 20,912.70 = 9,268.10 : x
  2. Step 2: Convert to fraction form
    13,941.80/20,912.70 = 9,268.10/x
  3. Step 3: Cross multiply
    13,941.80x = 20,912.70 × 9,268.10
  4. Step 4: Simplify right side
    13,941.80x = 193,820,994.87
  5. Step 5: Solve for x
    x = 193,820,994.87/13,941.80
  6. Step 6: Final answer
    x = 13,902.15

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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.