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Finding the Fourth Proportional to 13,673.77, 18,869.89 and 8,011.87

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Solution

The fourth proportional to 13,673.77, 18,869.89 and 8,011.87 is: 11,056.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.77 : 18,869.89 = 8,011.87 : x
  2. Step 2: Convert to fraction form
    13,673.77/18,869.89 = 8,011.87/x
  3. Step 3: Cross multiply
    13,673.77x = 18,869.89 × 8,011.87
  4. Step 4: Simplify right side
    13,673.77x = 151,183,105.59
  5. Step 5: Solve for x
    x = 151,183,105.59/13,673.77
  6. Step 6: Final answer
    x = 11,056.43

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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.