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Finding the Fourth Proportional to 11,866.78, 17,801.39 and 4,477.46

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Solution

The fourth proportional to 11,866.78, 17,801.39 and 4,477.46 is: 6,716.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,866.78 : 17,801.39 = 4,477.46 : x
  2. Step 2: Convert to fraction form
    11,866.78/17,801.39 = 4,477.46/x
  3. Step 3: Cross multiply
    11,866.78x = 17,801.39 × 4,477.46
  4. Step 4: Simplify right side
    11,866.78x = 79,704,900.28
  5. Step 5: Solve for x
    x = 79,704,900.28/11,866.78
  6. Step 6: Final answer
    x = 6,716.64

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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.