Home / 12,538.66-18,808.37-5,515.03

Finding the Fourth Proportional to 12,538.66, 18,808.37 and 5,515.03

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Solution

The fourth proportional to 12,538.66, 18,808.37 and 5,515.03 is: 8,272.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,538.66 : 18,808.37 = 5,515.03 : x
  2. Step 2: Convert to fraction form
    12,538.66/18,808.37 = 5,515.03/x
  3. Step 3: Cross multiply
    12,538.66x = 18,808.37 × 5,515.03
  4. Step 4: Simplify right side
    12,538.66x = 103,728,724.80
  5. Step 5: Solve for x
    x = 103,728,724.80/12,538.66
  6. Step 6: Final answer
    x = 8,272.71

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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.