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Finding the Fourth Proportional to 18,694.17, 28,048.74 and 7,601.76

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Solution

The fourth proportional to 18,694.17, 28,048.74 and 7,601.76 is: 11,405.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.17 : 28,048.74 = 7,601.76 : x
  2. Step 2: Convert to fraction form
    18,694.17/28,048.74 = 7,601.76/x
  3. Step 3: Cross multiply
    18,694.17x = 28,048.74 × 7,601.76
  4. Step 4: Simplify right side
    18,694.17x = 213,219,789.78
  5. Step 5: Solve for x
    x = 213,219,789.78/18,694.17
  6. Step 6: Final answer
    x = 11,405.68

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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.