Home / 20,706.11-31,054.81-6,667.39

Finding the Fourth Proportional to 20,706.11, 31,054.81 and 6,667.39

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Solution

The fourth proportional to 20,706.11, 31,054.81 and 6,667.39 is: 9,999.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.11 : 31,054.81 = 6,667.39 : x
  2. Step 2: Convert to fraction form
    20,706.11/31,054.81 = 6,667.39/x
  3. Step 3: Cross multiply
    20,706.11x = 31,054.81 × 6,667.39
  4. Step 4: Simplify right side
    20,706.11x = 207,054,529.65
  5. Step 5: Solve for x
    x = 207,054,529.65/20,706.11
  6. Step 6: Final answer
    x = 9,999.68

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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.