Home / 11,349.87-15,658.43-8,372.79

Finding the Fourth Proportional to 11,349.87, 15,658.43 and 8,372.79

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Solution

The fourth proportional to 11,349.87, 15,658.43 and 8,372.79 is: 11,551.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,349.87 : 15,658.43 = 8,372.79 : x
  2. Step 2: Convert to fraction form
    11,349.87/15,658.43 = 8,372.79/x
  3. Step 3: Cross multiply
    11,349.87x = 15,658.43 × 8,372.79
  4. Step 4: Simplify right side
    11,349.87x = 131,104,704.26
  5. Step 5: Solve for x
    x = 131,104,704.26/11,349.87
  6. Step 6: Final answer
    x = 11,551.21

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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.