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Finding the Fourth Proportional to 18,913.50, 28,376.01 and 6,601.50

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Solution

The fourth proportional to 18,913.50, 28,376.01 and 6,601.50 is: 9,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.50 : 28,376.01 = 6,601.50 : x
  2. Step 2: Convert to fraction form
    18,913.50/28,376.01 = 6,601.50/x
  3. Step 3: Cross multiply
    18,913.50x = 28,376.01 × 6,601.50
  4. Step 4: Simplify right side
    18,913.50x = 187,324,230.02
  5. Step 5: Solve for x
    x = 187,324,230.02/18,913.50
  6. Step 6: Final answer
    x = 9,904.26

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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.