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Finding the Fourth Proportional to 14,290.87, 19,719.53 and 8,241.33

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Solution

The fourth proportional to 14,290.87, 19,719.53 and 8,241.33 is: 11,371.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,290.87 : 19,719.53 = 8,241.33 : x
  2. Step 2: Convert to fraction form
    14,290.87/19,719.53 = 8,241.33/x
  3. Step 3: Cross multiply
    14,290.87x = 19,719.53 × 8,241.33
  4. Step 4: Simplify right side
    14,290.87x = 162,515,217.82
  5. Step 5: Solve for x
    x = 162,515,217.82/14,290.87
  6. Step 6: Final answer
    x = 11,371.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.