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Finding the Fourth Proportional to 18,489,372.56, 27,680,093.40 and 10,789,421.84

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Solution

The fourth proportional to 18,489,372.56, 27,680,093.40 and 10,789,421.84 is: 16,152,641.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489,372.56 : 27,680,093.40 = 10,789,421.84 : x
  2. Step 2: Convert to fraction form
    18,489,372.56/27,680,093.40 = 10,789,421.84/x
  3. Step 3: Cross multiply
    18,489,372.56x = 27,680,093.40 × 10,789,421.84
  4. Step 4: Simplify right side
    18,489,372.56x = 298,652,204,263,199.81
  5. Step 5: Solve for x
    x = 298,652,204,263,199.81/18,489,372.56
  6. Step 6: Final answer
    x = 16,152,641.38

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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.