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Finding the Fourth Proportional to 12,692.61, 19,040.19 and 4,371.54

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Solution

The fourth proportional to 12,692.61, 19,040.19 and 4,371.54 is: 6,557.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,692.61 : 19,040.19 = 4,371.54 : x
  2. Step 2: Convert to fraction form
    12,692.61/19,040.19 = 4,371.54/x
  3. Step 3: Cross multiply
    12,692.61x = 19,040.19 × 4,371.54
  4. Step 4: Simplify right side
    12,692.61x = 83,234,952.19
  5. Step 5: Solve for x
    x = 83,234,952.19/12,692.61
  6. Step 6: Final answer
    x = 6,557.75

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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.