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Finding the Fourth Proportional to 19,099.70, 28,667.67 and 8,003.30

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Solution

The fourth proportional to 19,099.70, 28,667.67 and 8,003.30 is: 12,012.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,099.70 : 28,667.67 = 8,003.30 : x
  2. Step 2: Convert to fraction form
    19,099.70/28,667.67 = 8,003.30/x
  3. Step 3: Cross multiply
    19,099.70x = 28,667.67 × 8,003.30
  4. Step 4: Simplify right side
    19,099.70x = 229,435,963.31
  5. Step 5: Solve for x
    x = 229,435,963.31/19,099.70
  6. Step 6: Final answer
    x = 12,012.54

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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.