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Finding the Fourth Proportional to 18,113.88, 27,172.80 and 5,630.94

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Solution

The fourth proportional to 18,113.88, 27,172.80 and 5,630.94 is: 8,447.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,113.88 : 27,172.80 = 5,630.94 : x
  2. Step 2: Convert to fraction form
    18,113.88/27,172.80 = 5,630.94/x
  3. Step 3: Cross multiply
    18,113.88x = 27,172.80 × 5,630.94
  4. Step 4: Simplify right side
    18,113.88x = 153,008,406.43
  5. Step 5: Solve for x
    x = 153,008,406.43/18,113.88
  6. Step 6: Final answer
    x = 8,447.03

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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.