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Finding the Fourth Proportional to 18,744.72, 28,116.36 and 4,704.72

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Solution

The fourth proportional to 18,744.72, 28,116.36 and 4,704.72 is: 7,056.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.72 : 28,116.36 = 4,704.72 : x
  2. Step 2: Convert to fraction form
    18,744.72/28,116.36 = 4,704.72/x
  3. Step 3: Cross multiply
    18,744.72x = 28,116.36 × 4,704.72
  4. Step 4: Simplify right side
    18,744.72x = 132,279,601.22
  5. Step 5: Solve for x
    x = 132,279,601.22/18,744.72
  6. Step 6: Final answer
    x = 7,056.90

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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.