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Finding the Fourth Proportional to 12,363.84, 18,545.60 and 4,155.84

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Solution

The fourth proportional to 12,363.84, 18,545.60 and 4,155.84 is: 6,233.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,363.84 : 18,545.60 = 4,155.84 : x
  2. Step 2: Convert to fraction form
    12,363.84/18,545.60 = 4,155.84/x
  3. Step 3: Cross multiply
    12,363.84x = 18,545.60 × 4,155.84
  4. Step 4: Simplify right side
    12,363.84x = 77,072,546.30
  5. Step 5: Solve for x
    x = 77,072,546.30/12,363.84
  6. Step 6: Final answer
    x = 6,233.71

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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.