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Finding the Fourth Proportional to 12,556.58, 17,324.58 and 8,972.62

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Solution

The fourth proportional to 12,556.58, 17,324.58 and 8,972.62 is: 12,379.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.58 : 17,324.58 = 8,972.62 : x
  2. Step 2: Convert to fraction form
    12,556.58/17,324.58 = 8,972.62/x
  3. Step 3: Cross multiply
    12,556.58x = 17,324.58 × 8,972.62
  4. Step 4: Simplify right side
    12,556.58x = 155,446,873.00
  5. Step 5: Solve for x
    x = 155,446,873.00/12,556.58
  6. Step 6: Final answer
    x = 12,379.71

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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.