Home / 19,791.40-29,694.94-8,690.36

Finding the Fourth Proportional to 19,791.40, 29,694.94 and 8,690.36

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Solution

The fourth proportional to 19,791.40, 29,694.94 and 8,690.36 is: 13,038.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,791.40 : 29,694.94 = 8,690.36 : x
  2. Step 2: Convert to fraction form
    19,791.40/29,694.94 = 8,690.36/x
  3. Step 3: Cross multiply
    19,791.40x = 29,694.94 × 8,690.36
  4. Step 4: Simplify right side
    19,791.40x = 258,059,718.78
  5. Step 5: Solve for x
    x = 258,059,718.78/19,791.40
  6. Step 6: Final answer
    x = 13,038.98

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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.