Home / 13,166.72-19,728.30-7,961.84

Finding the Fourth Proportional to 13,166.72, 19,728.30 and 7,961.84

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Solution

The fourth proportional to 13,166.72, 19,728.30 and 7,961.84 is: 11,929.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,166.72 : 19,728.30 = 7,961.84 : x
  2. Step 2: Convert to fraction form
    13,166.72/19,728.30 = 7,961.84/x
  3. Step 3: Cross multiply
    13,166.72x = 19,728.30 × 7,961.84
  4. Step 4: Simplify right side
    13,166.72x = 157,073,568.07
  5. Step 5: Solve for x
    x = 157,073,568.07/13,166.72
  6. Step 6: Final answer
    x = 11,929.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.