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Finding the Fourth Proportional to 13,611.70, 20,424.03 and 10,695.70

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Solution

The fourth proportional to 13,611.70, 20,424.03 and 10,695.70 is: 16,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611.70 : 20,424.03 = 10,695.70 : x
  2. Step 2: Convert to fraction form
    13,611.70/20,424.03 = 10,695.70/x
  3. Step 3: Cross multiply
    13,611.70x = 20,424.03 × 10,695.70
  4. Step 4: Simplify right side
    13,611.70x = 218,449,297.67
  5. Step 5: Solve for x
    x = 218,449,297.67/13,611.70
  6. Step 6: Final answer
    x = 16,048.64

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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.