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Finding the Fourth Proportional to 12,513.01, 18,770.06 and 4,722.43

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Solution

The fourth proportional to 12,513.01, 18,770.06 and 4,722.43 is: 7,083.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,513.01 : 18,770.06 = 4,722.43 : x
  2. Step 2: Convert to fraction form
    12,513.01/18,770.06 = 4,722.43/x
  3. Step 3: Cross multiply
    12,513.01x = 18,770.06 × 4,722.43
  4. Step 4: Simplify right side
    12,513.01x = 88,640,294.45
  5. Step 5: Solve for x
    x = 88,640,294.45/12,513.01
  6. Step 6: Final answer
    x = 7,083.85

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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.