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Finding the Fourth Proportional to 18,861.68, 26,028.98 and 10,363.89

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Solution

The fourth proportional to 18,861.68, 26,028.98 and 10,363.89 is: 14,302.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.68 : 26,028.98 = 10,363.89 : x
  2. Step 2: Convert to fraction form
    18,861.68/26,028.98 = 10,363.89/x
  3. Step 3: Cross multiply
    18,861.68x = 26,028.98 × 10,363.89
  4. Step 4: Simplify right side
    18,861.68x = 269,761,413.83
  5. Step 5: Solve for x
    x = 269,761,413.83/18,861.68
  6. Step 6: Final answer
    x = 14,302.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.