Home / 13,674.60-18,871.34-7,705.94

Finding the Fourth Proportional to 13,674.60, 18,871.34 and 7,705.94

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Solution

The fourth proportional to 13,674.60, 18,871.34 and 7,705.94 is: 10,634.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,674.60 : 18,871.34 = 7,705.94 : x
  2. Step 2: Convert to fraction form
    13,674.60/18,871.34 = 7,705.94/x
  3. Step 3: Cross multiply
    13,674.60x = 18,871.34 × 7,705.94
  4. Step 4: Simplify right side
    13,674.60x = 145,421,413.76
  5. Step 5: Solve for x
    x = 145,421,413.76/13,674.60
  6. Step 6: Final answer
    x = 10,634.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.