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Finding the Fourth Proportional to 19,190.75, 28,773.83 and 13,251

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Solution

The fourth proportional to 19,190.75, 28,773.83 and 13,251 is: 19,868.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,190.75 : 28,773.83 = 13,251 : x
  2. Step 2: Convert to fraction form
    19,190.75/28,773.83 = 13,251/x
  3. Step 3: Cross multiply
    19,190.75x = 28,773.83 × 13,251
  4. Step 4: Simplify right side
    19,190.75x = 381,282,054.46
  5. Step 5: Solve for x
    x = 381,282,054.46/19,190.75
  6. Step 6: Final answer
    x = 19,868.01

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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.