Home / 43,311.56-64,969.26-12,146.12

Finding the Fourth Proportional to 43,311.56, 64,969.26 and 12,146.12

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Solution

The fourth proportional to 43,311.56, 64,969.26 and 12,146.12 is: 18,219.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,311.56 : 64,969.26 = 12,146.12 : x
  2. Step 2: Convert to fraction form
    43,311.56/64,969.26 = 12,146.12/x
  3. Step 3: Cross multiply
    43,311.56x = 64,969.26 × 12,146.12
  4. Step 4: Simplify right side
    43,311.56x = 789,124,428.27
  5. Step 5: Solve for x
    x = 789,124,428.27/43,311.56
  6. Step 6: Final answer
    x = 18,219.72

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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.