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Finding the Fourth Proportional to 17,187.53, 25,782.64 and 7,326.88

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Solution

The fourth proportional to 17,187.53, 25,782.64 and 7,326.88 is: 10,990.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,187.53 : 25,782.64 = 7,326.88 : x
  2. Step 2: Convert to fraction form
    17,187.53/25,782.64 = 7,326.88/x
  3. Step 3: Cross multiply
    17,187.53x = 25,782.64 × 7,326.88
  4. Step 4: Simplify right side
    17,187.53x = 188,906,226.59
  5. Step 5: Solve for x
    x = 188,906,226.59/17,187.53
  6. Step 6: Final answer
    x = 10,990.89

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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.