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Finding the Fourth Proportional to 12,545.97, 18,822.05 and 8,855.41

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Solution

The fourth proportional to 12,545.97, 18,822.05 and 8,855.41 is: 13,285.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.97 : 18,822.05 = 8,855.41 : x
  2. Step 2: Convert to fraction form
    12,545.97/18,822.05 = 8,855.41/x
  3. Step 3: Cross multiply
    12,545.97x = 18,822.05 × 8,855.41
  4. Step 4: Simplify right side
    12,545.97x = 166,676,878.46
  5. Step 5: Solve for x
    x = 166,676,878.46/12,545.97
  6. Step 6: Final answer
    x = 13,285.29

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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.