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Finding the Fourth Proportional to 12,513.87, 18,770.73 and 5,020.82

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Solution

The fourth proportional to 12,513.87, 18,770.73 and 5,020.82 is: 7,531.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.87 : 18,770.73 = 5,020.82 : x
  2. Step 2: Convert to fraction form
    12,513.87/18,770.73 = 5,020.82/x
  3. Step 3: Cross multiply
    12,513.87x = 18,770.73 × 5,020.82
  4. Step 4: Simplify right side
    12,513.87x = 94,244,362.74
  5. Step 5: Solve for x
    x = 94,244,362.74/12,513.87
  6. Step 6: Final answer
    x = 7,531.19

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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.