Home / 13,172.80-19,756-4,405.44

Finding the Fourth Proportional to 13,172.80, 19,756 and 4,405.44

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Solution

The fourth proportional to 13,172.80, 19,756 and 4,405.44 is: 6,607.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.80 : 19,756 = 4,405.44 : x
  2. Step 2: Convert to fraction form
    13,172.80/19,756 = 4,405.44/x
  3. Step 3: Cross multiply
    13,172.80x = 19,756 × 4,405.44
  4. Step 4: Simplify right side
    13,172.80x = 87,033,872.64
  5. Step 5: Solve for x
    x = 87,033,872.64/13,172.80
  6. Step 6: Final answer
    x = 6,607.09

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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.