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Finding the Fourth Proportional to 11,852.63, 17,814.94 and 7,917.85

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Solution

The fourth proportional to 11,852.63, 17,814.94 and 7,917.85 is: 11,900.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,852.63 : 17,814.94 = 7,917.85 : x
  2. Step 2: Convert to fraction form
    11,852.63/17,814.94 = 7,917.85/x
  3. Step 3: Cross multiply
    11,852.63x = 17,814.94 × 7,917.85
  4. Step 4: Simplify right side
    11,852.63x = 141,056,025.15
  5. Step 5: Solve for x
    x = 141,056,025.15/11,852.63
  6. Step 6: Final answer
    x = 11,900.82

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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.