Home / 13,172.58-19,757.79-3,938.58

Finding the Fourth Proportional to 13,172.58, 19,757.79 and 3,938.58

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Solution

The fourth proportional to 13,172.58, 19,757.79 and 3,938.58 is: 5,907.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.58 : 19,757.79 = 3,938.58 : x
  2. Step 2: Convert to fraction form
    13,172.58/19,757.79 = 3,938.58/x
  3. Step 3: Cross multiply
    13,172.58x = 19,757.79 × 3,938.58
  4. Step 4: Simplify right side
    13,172.58x = 77,817,636.54
  5. Step 5: Solve for x
    x = 77,817,636.54/13,172.58
  6. Step 6: Final answer
    x = 5,907.55

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1.5x scale

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.