Home / 12,759.89-19,138.73-4,438.49

Finding the Fourth Proportional to 12,759.89, 19,138.73 and 4,438.49

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Solution

The fourth proportional to 12,759.89, 19,138.73 and 4,438.49 is: 6,657.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759.89 : 19,138.73 = 4,438.49 : x
  2. Step 2: Convert to fraction form
    12,759.89/19,138.73 = 4,438.49/x
  3. Step 3: Cross multiply
    12,759.89x = 19,138.73 × 4,438.49
  4. Step 4: Simplify right side
    12,759.89x = 84,946,943.83
  5. Step 5: Solve for x
    x = 84,946,943.83/12,759.89
  6. Step 6: Final answer
    x = 6,657.34

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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.