Home / 12,406.05-17,120.55-6,740.91

Finding the Fourth Proportional to 12,406.05, 17,120.55 and 6,740.91

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Solution

The fourth proportional to 12,406.05, 17,120.55 and 6,740.91 is: 9,302.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.05 : 17,120.55 = 6,740.91 : x
  2. Step 2: Convert to fraction form
    12,406.05/17,120.55 = 6,740.91/x
  3. Step 3: Cross multiply
    12,406.05x = 17,120.55 × 6,740.91
  4. Step 4: Simplify right side
    12,406.05x = 115,408,086.70
  5. Step 5: Solve for x
    x = 115,408,086.70/12,406.05
  6. Step 6: Final answer
    x = 9,302.57

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