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Finding the Fourth Proportional to 19,187.25, 28,782.50 and 5,336.25

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Solution

The fourth proportional to 19,187.25, 28,782.50 and 5,336.25 is: 8,004.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187.25 : 28,782.50 = 5,336.25 : x
  2. Step 2: Convert to fraction form
    19,187.25/28,782.50 = 5,336.25/x
  3. Step 3: Cross multiply
    19,187.25x = 28,782.50 × 5,336.25
  4. Step 4: Simplify right side
    19,187.25x = 153,590,588.94
  5. Step 5: Solve for x
    x = 153,590,588.94/19,187.25
  6. Step 6: Final answer
    x = 8,004.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.