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Finding the Fourth Proportional to 13,573,811.16, 18,730,745.82 and 7,991,171.40

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Solution

The fourth proportional to 13,573,811.16, 18,730,745.82 and 7,991,171.40 is: 11,027,160.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,573,811.16 : 18,730,745.82 = 7,991,171.40 : x
  2. Step 2: Convert to fraction form
    13,573,811.16/18,730,745.82 = 7,991,171.40/x
  3. Step 3: Cross multiply
    13,573,811.16x = 18,730,745.82 × 7,991,171.40
  4. Step 4: Simplify right side
    13,573,811.16x = 149,680,600,297,453.56
  5. Step 5: Solve for x
    x = 149,680,600,297,453.56/13,573,811.16
  6. Step 6: Final answer
    x = 11,027,160.94

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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.