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Finding the Fourth Proportional to 18,578.01, 25,641.39 and 12,611.62

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Solution

The fourth proportional to 18,578.01, 25,641.39 and 12,611.62 is: 17,406.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578.01 : 25,641.39 = 12,611.62 : x
  2. Step 2: Convert to fraction form
    18,578.01/25,641.39 = 12,611.62/x
  3. Step 3: Cross multiply
    18,578.01x = 25,641.39 × 12,611.62
  4. Step 4: Simplify right side
    18,578.01x = 323,379,466.95
  5. Step 5: Solve for x
    x = 323,379,466.95/18,578.01
  6. Step 6: Final answer
    x = 17,406.57

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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.