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Finding the Fourth Proportional to 19,327.50, 28,991.25 and 5,476.50

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Solution

The fourth proportional to 19,327.50, 28,991.25 and 5,476.50 is: 8,214.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,327.50 : 28,991.25 = 5,476.50 : x
  2. Step 2: Convert to fraction form
    19,327.50/28,991.25 = 5,476.50/x
  3. Step 3: Cross multiply
    19,327.50x = 28,991.25 × 5,476.50
  4. Step 4: Simplify right side
    19,327.50x = 158,770,580.63
  5. Step 5: Solve for x
    x = 158,770,580.63/19,327.50
  6. Step 6: Final answer
    x = 8,214.75

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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.