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Finding the Fourth Proportional to 17,469.36, 26,199.36 and 11,921.76

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Solution

The fourth proportional to 17,469.36, 26,199.36 and 11,921.76 is: 17,879.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,469.36 : 26,199.36 = 11,921.76 : x
  2. Step 2: Convert to fraction form
    17,469.36/26,199.36 = 11,921.76/x
  3. Step 3: Cross multiply
    17,469.36x = 26,199.36 × 11,921.76
  4. Step 4: Simplify right side
    17,469.36x = 312,342,482.07
  5. Step 5: Solve for x
    x = 312,342,482.07/17,469.36
  6. Step 6: Final answer
    x = 17,879.45

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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.