Home / 12,690.94-19,038.23-3,926.54

Finding the Fourth Proportional to 12,690.94, 19,038.23 and 3,926.54

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Solution

The fourth proportional to 12,690.94, 19,038.23 and 3,926.54 is: 5,890.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.94 : 19,038.23 = 3,926.54 : x
  2. Step 2: Convert to fraction form
    12,690.94/19,038.23 = 3,926.54/x
  3. Step 3: Cross multiply
    12,690.94x = 19,038.23 × 3,926.54
  4. Step 4: Simplify right side
    12,690.94x = 74,754,256.80
  5. Step 5: Solve for x
    x = 74,754,256.80/12,690.94
  6. Step 6: Final answer
    x = 5,890.37

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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.