Home / 12,738.88-19,108.32-3,505.28

Finding the Fourth Proportional to 12,738.88, 19,108.32 and 3,505.28

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Solution

The fourth proportional to 12,738.88, 19,108.32 and 3,505.28 is: 5,257.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.88 : 19,108.32 = 3,505.28 : x
  2. Step 2: Convert to fraction form
    12,738.88/19,108.32 = 3,505.28/x
  3. Step 3: Cross multiply
    12,738.88x = 19,108.32 × 3,505.28
  4. Step 4: Simplify right side
    12,738.88x = 66,980,011.93
  5. Step 5: Solve for x
    x = 66,980,011.93/12,738.88
  6. Step 6: Final answer
    x = 5,257.92

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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.