Home / 12,738.84-19,115.55-4,946.64

Finding the Fourth Proportional to 12,738.84, 19,115.55 and 4,946.64

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Solution

The fourth proportional to 12,738.84, 19,115.55 and 4,946.64 is: 7,422.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.84 : 19,115.55 = 4,946.64 : x
  2. Step 2: Convert to fraction form
    12,738.84/19,115.55 = 4,946.64/x
  3. Step 3: Cross multiply
    12,738.84x = 19,115.55 × 4,946.64
  4. Step 4: Simplify right side
    12,738.84x = 94,557,744.25
  5. Step 5: Solve for x
    x = 94,557,744.25/12,738.84
  6. Step 6: Final answer
    x = 7,422.79

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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.