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Finding the Fourth Proportional to 18,206.98, 25,113.04 and 11,136.89

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Solution

The fourth proportional to 18,206.98, 25,113.04 and 11,136.89 is: 15,361.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,206.98 : 25,113.04 = 11,136.89 : x
  2. Step 2: Convert to fraction form
    18,206.98/25,113.04 = 11,136.89/x
  3. Step 3: Cross multiply
    18,206.98x = 25,113.04 × 11,136.89
  4. Step 4: Simplify right side
    18,206.98x = 279,681,198.99
  5. Step 5: Solve for x
    x = 279,681,198.99/18,206.98
  6. Step 6: Final answer
    x = 15,361.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.