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Finding the Fourth Proportional to 18,883.84, 26,035.62 and 11,807.68

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Solution

The fourth proportional to 18,883.84, 26,035.62 and 11,807.68 is: 16,279.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.84 : 26,035.62 = 11,807.68 : x
  2. Step 2: Convert to fraction form
    18,883.84/26,035.62 = 11,807.68/x
  3. Step 3: Cross multiply
    18,883.84x = 26,035.62 × 11,807.68
  4. Step 4: Simplify right side
    18,883.84x = 307,420,269.56
  5. Step 5: Solve for x
    x = 307,420,269.56/18,883.84
  6. Step 6: Final answer
    x = 16,279.54

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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.