Home / 10,919.21-16,378.81-5,072.63

Finding the Fourth Proportional to 10,919.21, 16,378.81 and 5,072.63

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Solution

The fourth proportional to 10,919.21, 16,378.81 and 5,072.63 is: 7,608.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.21 : 16,378.81 = 5,072.63 : x
  2. Step 2: Convert to fraction form
    10,919.21/16,378.81 = 5,072.63/x
  3. Step 3: Cross multiply
    10,919.21x = 16,378.81 × 5,072.63
  4. Step 4: Simplify right side
    10,919.21x = 83,083,548.39
  5. Step 5: Solve for x
    x = 83,083,548.39/10,919.21
  6. Step 6: Final answer
    x = 7,608.94

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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.