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Finding the Fourth Proportional to 18,706.24, 28,060.88 and 5,558.63

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Solution

The fourth proportional to 18,706.24, 28,060.88 and 5,558.63 is: 8,338.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,706.24 : 28,060.88 = 5,558.63 : x
  2. Step 2: Convert to fraction form
    18,706.24/28,060.88 = 5,558.63/x
  3. Step 3: Cross multiply
    18,706.24x = 28,060.88 × 5,558.63
  4. Step 4: Simplify right side
    18,706.24x = 155,979,912.56
  5. Step 5: Solve for x
    x = 155,979,912.56/18,706.24
  6. Step 6: Final answer
    x = 8,338.39

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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.