Home / 13,235.15-19,846.34-7,690.09

Finding the Fourth Proportional to 13,235.15, 19,846.34 and 7,690.09

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Solution

The fourth proportional to 13,235.15, 19,846.34 and 7,690.09 is: 11,531.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235.15 : 19,846.34 = 7,690.09 : x
  2. Step 2: Convert to fraction form
    13,235.15/19,846.34 = 7,690.09/x
  3. Step 3: Cross multiply
    13,235.15x = 19,846.34 × 7,690.09
  4. Step 4: Simplify right side
    13,235.15x = 152,620,140.38
  5. Step 5: Solve for x
    x = 152,620,140.38/13,235.15
  6. Step 6: Final answer
    x = 11,531.43

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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.