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Finding the Fourth Proportional to 18,894.75, 28,343.30 and 5,748.09

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Solution

The fourth proportional to 18,894.75, 28,343.30 and 5,748.09 is: 8,622.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,894.75 : 28,343.30 = 5,748.09 : x
  2. Step 2: Convert to fraction form
    18,894.75/28,343.30 = 5,748.09/x
  3. Step 3: Cross multiply
    18,894.75x = 28,343.30 × 5,748.09
  4. Step 4: Simplify right side
    18,894.75x = 162,919,810.56
  5. Step 5: Solve for x
    x = 162,919,810.56/18,894.75
  6. Step 6: Final answer
    x = 8,622.49

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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.