Home / 13,172.16-19,756.80-3,936

Finding the Fourth Proportional to 13,172.16, 19,756.80 and 3,936

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Solution

The fourth proportional to 13,172.16, 19,756.80 and 3,936 is: 5,903.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.16 : 19,756.80 = 3,936 : x
  2. Step 2: Convert to fraction form
    13,172.16/19,756.80 = 3,936/x
  3. Step 3: Cross multiply
    13,172.16x = 19,756.80 × 3,936
  4. Step 4: Simplify right side
    13,172.16x = 77,762,764.80
  5. Step 5: Solve for x
    x = 77,762,764.80/13,172.16
  6. Step 6: Final answer
    x = 5,903.57

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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.