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Finding the Fourth Proportional to 43,467.62, 65,213.80 and 13,887.76

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Solution

The fourth proportional to 43,467.62, 65,213.80 and 13,887.76 is: 20,835.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,467.62 : 65,213.80 = 13,887.76 : x
  2. Step 2: Convert to fraction form
    43,467.62/65,213.80 = 13,887.76/x
  3. Step 3: Cross multiply
    43,467.62x = 65,213.80 × 13,887.76
  4. Step 4: Simplify right side
    43,467.62x = 905,673,603.09
  5. Step 5: Solve for x
    x = 905,673,603.09/43,467.62
  6. Step 6: Final answer
    x = 20,835.59

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1.5x scale

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.