Home / 12,729.75-19,105.15-6,494.37

Finding the Fourth Proportional to 12,729.75, 19,105.15 and 6,494.37

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Solution

The fourth proportional to 12,729.75, 19,105.15 and 6,494.37 is: 9,746.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.75 : 19,105.15 = 6,494.37 : x
  2. Step 2: Convert to fraction form
    12,729.75/19,105.15 = 6,494.37/x
  3. Step 3: Cross multiply
    12,729.75x = 19,105.15 × 6,494.37
  4. Step 4: Simplify right side
    12,729.75x = 124,075,913.01
  5. Step 5: Solve for x
    x = 124,075,913.01/12,729.75
  6. Step 6: Final answer
    x = 9,746.92

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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.