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Finding the Fourth Proportional to 17,768.80, 26,628.90 and 11,828.80

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Solution

The fourth proportional to 17,768.80, 26,628.90 and 11,828.80 is: 17,727.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,768.80 : 26,628.90 = 11,828.80 : x
  2. Step 2: Convert to fraction form
    17,768.80/26,628.90 = 11,828.80/x
  3. Step 3: Cross multiply
    17,768.80x = 26,628.90 × 11,828.80
  4. Step 4: Simplify right side
    17,768.80x = 314,987,932.32
  5. Step 5: Solve for x
    x = 314,987,932.32/17,768.80
  6. Step 6: Final answer
    x = 17,727.02

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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.