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Finding the Fourth Proportional to 11,917.10, 17,860.80 and 7,524.74

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Solution

The fourth proportional to 11,917.10, 17,860.80 and 7,524.74 is: 11,277.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,917.10 : 17,860.80 = 7,524.74 : x
  2. Step 2: Convert to fraction form
    11,917.10/17,860.80 = 7,524.74/x
  3. Step 3: Cross multiply
    11,917.10x = 17,860.80 × 7,524.74
  4. Step 4: Simplify right side
    11,917.10x = 134,397,876.19
  5. Step 5: Solve for x
    x = 134,397,876.19/11,917.10
  6. Step 6: Final answer
    x = 11,277.73

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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.