Home / 12,826.80-19,241.96-5,426.64

Finding the Fourth Proportional to 12,826.80, 19,241.96 and 5,426.64

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Solution

The fourth proportional to 12,826.80, 19,241.96 and 5,426.64 is: 8,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,826.80 : 19,241.96 = 5,426.64 : x
  2. Step 2: Convert to fraction form
    12,826.80/19,241.96 = 5,426.64/x
  3. Step 3: Cross multiply
    12,826.80x = 19,241.96 × 5,426.64
  4. Step 4: Simplify right side
    12,826.80x = 104,419,189.81
  5. Step 5: Solve for x
    x = 104,419,189.81/12,826.80
  6. Step 6: Final answer
    x = 8,140.70

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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.