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Finding the Fourth Proportional to 19,238.77, 28,858.15 and 7,551.98

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Solution

The fourth proportional to 19,238.77, 28,858.15 and 7,551.98 is: 11,327.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,238.77 : 28,858.15 = 7,551.98 : x
  2. Step 2: Convert to fraction form
    19,238.77/28,858.15 = 7,551.98/x
  3. Step 3: Cross multiply
    19,238.77x = 28,858.15 × 7,551.98
  4. Step 4: Simplify right side
    19,238.77x = 217,936,286.09
  5. Step 5: Solve for x
    x = 217,936,286.09/19,238.77
  6. Step 6: Final answer
    x = 11,327.98

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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.