Home / 11,157.85-16,727.82-7,639.21

Finding the Fourth Proportional to 11,157.85, 16,727.82 and 7,639.21

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Solution

The fourth proportional to 11,157.85, 16,727.82 and 7,639.21 is: 11,452.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.85 : 16,727.82 = 7,639.21 : x
  2. Step 2: Convert to fraction form
    11,157.85/16,727.82 = 7,639.21/x
  3. Step 3: Cross multiply
    11,157.85x = 16,727.82 × 7,639.21
  4. Step 4: Simplify right side
    11,157.85x = 127,787,322.08
  5. Step 5: Solve for x
    x = 127,787,322.08/11,157.85
  6. Step 6: Final answer
    x = 11,452.68

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1.5x scale

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.