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Finding the Fourth Proportional to 13,474.84, 20,213.88 and 12,737.56

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Solution

The fourth proportional to 13,474.84, 20,213.88 and 12,737.56 is: 19,107.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,474.84 : 20,213.88 = 12,737.56 : x
  2. Step 2: Convert to fraction form
    13,474.84/20,213.88 = 12,737.56/x
  3. Step 3: Cross multiply
    13,474.84x = 20,213.88 × 12,737.56
  4. Step 4: Simplify right side
    13,474.84x = 257,475,509.33
  5. Step 5: Solve for x
    x = 257,475,509.33/13,474.84
  6. Step 6: Final answer
    x = 19,107.87

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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.