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Finding the Fourth Proportional to 18,136.77, 25,040.41 and 12,469.70

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Solution

The fourth proportional to 18,136.77, 25,040.41 and 12,469.70 is: 17,216.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,136.77 : 25,040.41 = 12,469.70 : x
  2. Step 2: Convert to fraction form
    18,136.77/25,040.41 = 12,469.70/x
  3. Step 3: Cross multiply
    18,136.77x = 25,040.41 × 12,469.70
  4. Step 4: Simplify right side
    18,136.77x = 312,246,432.00
  5. Step 5: Solve for x
    x = 312,246,432.00/18,136.77
  6. Step 6: Final answer
    x = 17,216.21

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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.