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Finding the Fourth Proportional to 18,894.56, 28,333.55 and 7,199.57

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Solution

The fourth proportional to 18,894.56, 28,333.55 and 7,199.57 is: 10,796.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.56 : 28,333.55 = 7,199.57 : x
  2. Step 2: Convert to fraction form
    18,894.56/28,333.55 = 7,199.57/x
  3. Step 3: Cross multiply
    18,894.56x = 28,333.55 × 7,199.57
  4. Step 4: Simplify right side
    18,894.56x = 203,989,198.91
  5. Step 5: Solve for x
    x = 203,989,198.91/18,894.56
  6. Step 6: Final answer
    x = 10,796.19

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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.