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Finding the Fourth Proportional to 17,917.80, 24,709.98 and 11,201.28

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Solution

The fourth proportional to 17,917.80, 24,709.98 and 11,201.28 is: 15,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,917.80 : 24,709.98 = 11,201.28 : x
  2. Step 2: Convert to fraction form
    17,917.80/24,709.98 = 11,201.28/x
  3. Step 3: Cross multiply
    17,917.80x = 24,709.98 × 11,201.28
  4. Step 4: Simplify right side
    17,917.80x = 276,783,404.77
  5. Step 5: Solve for x
    x = 276,783,404.77/17,917.80
  6. Step 6: Final answer
    x = 15,447.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.