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Finding the Fourth Proportional to 12,329, 17,014.02 and 7,920.68

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Solution

The fourth proportional to 12,329, 17,014.02 and 7,920.68 is: 10,930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,329 : 17,014.02 = 7,920.68 : x
  2. Step 2: Convert to fraction form
    12,329/17,014.02 = 7,920.68/x
  3. Step 3: Cross multiply
    12,329x = 17,014.02 × 7,920.68
  4. Step 4: Simplify right side
    12,329x = 134,762,607.93
  5. Step 5: Solve for x
    x = 134,762,607.93/12,329
  6. Step 6: Final answer
    x = 10,930.54

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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.