Home / 12,994.21-17,930.75-7,329.85

Finding the Fourth Proportional to 12,994.21, 17,930.75 and 7,329.85

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Solution

The fourth proportional to 12,994.21, 17,930.75 and 7,329.85 is: 10,114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,994.21 : 17,930.75 = 7,329.85 : x
  2. Step 2: Convert to fraction form
    12,994.21/17,930.75 = 7,329.85/x
  3. Step 3: Cross multiply
    12,994.21x = 17,930.75 × 7,329.85
  4. Step 4: Simplify right side
    12,994.21x = 131,429,707.89
  5. Step 5: Solve for x
    x = 131,429,707.89/12,994.21
  6. Step 6: Final answer
    x = 10,114.48

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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.