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Finding the Fourth Proportional to 13,177.96, 19,672.96 and 12,716.62

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Solution

The fourth proportional to 13,177.96, 19,672.96 and 12,716.62 is: 18,984.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.96 : 19,672.96 = 12,716.62 : x
  2. Step 2: Convert to fraction form
    13,177.96/19,672.96 = 12,716.62/x
  3. Step 3: Cross multiply
    13,177.96x = 19,672.96 × 12,716.62
  4. Step 4: Simplify right side
    13,177.96x = 250,173,556.60
  5. Step 5: Solve for x
    x = 250,173,556.60/13,177.96
  6. Step 6: Final answer
    x = 18,984.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.