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Finding the Fourth Proportional to 18,706.17, 28,060.46 and 7,606.80

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Solution

The fourth proportional to 18,706.17, 28,060.46 and 7,606.80 is: 11,410.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.17 : 28,060.46 = 7,606.80 : x
  2. Step 2: Convert to fraction form
    18,706.17/28,060.46 = 7,606.80/x
  3. Step 3: Cross multiply
    18,706.17x = 28,060.46 × 7,606.80
  4. Step 4: Simplify right side
    18,706.17x = 213,450,269.09
  5. Step 5: Solve for x
    x = 213,450,269.09/18,706.17
  6. Step 6: Final answer
    x = 11,410.69

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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.