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Finding the Fourth Proportional to 18,611.58, 27,913.05 and 5,460.42

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Solution

The fourth proportional to 18,611.58, 27,913.05 and 5,460.42 is: 8,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.58 : 27,913.05 = 5,460.42 : x
  2. Step 2: Convert to fraction form
    18,611.58/27,913.05 = 5,460.42/x
  3. Step 3: Cross multiply
    18,611.58x = 27,913.05 × 5,460.42
  4. Step 4: Simplify right side
    18,611.58x = 152,416,976.48
  5. Step 5: Solve for x
    x = 152,416,976.48/18,611.58
  6. Step 6: Final answer
    x = 8,189.36

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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.