Home / 12,986.85-17,922.78-7,322.11

Finding the Fourth Proportional to 12,986.85, 17,922.78 and 7,322.11

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Solution

The fourth proportional to 12,986.85, 17,922.78 and 7,322.11 is: 10,105.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.85 : 17,922.78 = 7,322.11 : x
  2. Step 2: Convert to fraction form
    12,986.85/17,922.78 = 7,322.11/x
  3. Step 3: Cross multiply
    12,986.85x = 17,922.78 × 7,322.11
  4. Step 4: Simplify right side
    12,986.85x = 131,232,566.67
  5. Step 5: Solve for x
    x = 131,232,566.67/12,986.85
  6. Step 6: Final answer
    x = 10,105.03

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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.