Home / 12,690.36-19,036.82-4,369.28

Finding the Fourth Proportional to 12,690.36, 19,036.82 and 4,369.28

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Solution

The fourth proportional to 12,690.36, 19,036.82 and 4,369.28 is: 6,554.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.36 : 19,036.82 = 4,369.28 : x
  2. Step 2: Convert to fraction form
    12,690.36/19,036.82 = 4,369.28/x
  3. Step 3: Cross multiply
    12,690.36x = 19,036.82 × 4,369.28
  4. Step 4: Simplify right side
    12,690.36x = 83,177,112.63
  5. Step 5: Solve for x
    x = 83,177,112.63/12,690.36
  6. Step 6: Final answer
    x = 6,554.35

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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.