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Finding the Fourth Proportional to 12,329, 17,014.02 and 8,138.60

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Solution

The fourth proportional to 12,329, 17,014.02 and 8,138.60 is: 11,231.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,329 : 17,014.02 = 8,138.60 : x
  2. Step 2: Convert to fraction form
    12,329/17,014.02 = 8,138.60/x
  3. Step 3: Cross multiply
    12,329x = 17,014.02 × 8,138.60
  4. Step 4: Simplify right side
    12,329x = 138,470,303.17
  5. Step 5: Solve for x
    x = 138,470,303.17/12,329
  6. Step 6: Final answer
    x = 11,231.27

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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.