Home / 43,979-65,968.50-11,147

Finding the Fourth Proportional to 43,979, 65,968.50 and 11,147

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Solution

The fourth proportional to 43,979, 65,968.50 and 11,147 is: 16,720.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,979 : 65,968.50 = 11,147 : x
  2. Step 2: Convert to fraction form
    43,979/65,968.50 = 11,147/x
  3. Step 3: Cross multiply
    43,979x = 65,968.50 × 11,147
  4. Step 4: Simplify right side
    43,979x = 735,350,869.50
  5. Step 5: Solve for x
    x = 735,350,869.50/43,979
  6. Step 6: Final answer
    x = 16,720.50

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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.