Home / 13,431.98-18,523.73-8,394.59

Finding the Fourth Proportional to 13,431.98, 18,523.73 and 8,394.59

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Solution

The fourth proportional to 13,431.98, 18,523.73 and 8,394.59 is: 11,576.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.98 : 18,523.73 = 8,394.59 : x
  2. Step 2: Convert to fraction form
    13,431.98/18,523.73 = 8,394.59/x
  3. Step 3: Cross multiply
    13,431.98x = 18,523.73 × 8,394.59
  4. Step 4: Simplify right side
    13,431.98x = 155,499,118.62
  5. Step 5: Solve for x
    x = 155,499,118.62/13,431.98
  6. Step 6: Final answer
    x = 11,576.78

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1.5x scale

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.