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Finding the Fourth Proportional to 18,900.16, 28,350 and 8,504.56

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Solution

The fourth proportional to 18,900.16, 28,350 and 8,504.56 is: 12,756.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.16 : 28,350 = 8,504.56 : x
  2. Step 2: Convert to fraction form
    18,900.16/28,350 = 8,504.56/x
  3. Step 3: Cross multiply
    18,900.16x = 28,350 × 8,504.56
  4. Step 4: Simplify right side
    18,900.16x = 241,104,276
  5. Step 5: Solve for x
    x = 241,104,276/18,900.16
  6. Step 6: Final answer
    x = 12,756.73

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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.