Home / 13,145.29-19,721.07-4,380.28

Finding the Fourth Proportional to 13,145.29, 19,721.07 and 4,380.28

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Solution

The fourth proportional to 13,145.29, 19,721.07 and 4,380.28 is: 6,571.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,145.29 : 19,721.07 = 4,380.28 : x
  2. Step 2: Convert to fraction form
    13,145.29/19,721.07 = 4,380.28/x
  3. Step 3: Cross multiply
    13,145.29x = 19,721.07 × 4,380.28
  4. Step 4: Simplify right side
    13,145.29x = 86,383,759.20
  5. Step 5: Solve for x
    x = 86,383,759.20/13,145.29
  6. Step 6: Final answer
    x = 6,571.46

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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.