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Finding the Fourth Proportional to 12,677.70, 18,988.82 and 6,426.98

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Solution

The fourth proportional to 12,677.70, 18,988.82 and 6,426.98 is: 9,626.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,677.70 : 18,988.82 = 6,426.98 : x
  2. Step 2: Convert to fraction form
    12,677.70/18,988.82 = 6,426.98/x
  3. Step 3: Cross multiply
    12,677.70x = 18,988.82 × 6,426.98
  4. Step 4: Simplify right side
    12,677.70x = 122,040,766.36
  5. Step 5: Solve for x
    x = 122,040,766.36/12,677.70
  6. Step 6: Final answer
    x = 9,626.41

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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.