Home / 13,926.60-20,745.18-13,172.09

Finding the Fourth Proportional to 13,926.60, 20,745.18 and 13,172.09

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Solution

The fourth proportional to 13,926.60, 20,745.18 and 13,172.09 is: 19,621.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,926.60 : 20,745.18 = 13,172.09 : x
  2. Step 2: Convert to fraction form
    13,926.60/20,745.18 = 13,172.09/x
  3. Step 3: Cross multiply
    13,926.60x = 20,745.18 × 13,172.09
  4. Step 4: Simplify right side
    13,926.60x = 273,257,274.30
  5. Step 5: Solve for x
    x = 273,257,274.30/13,926.60
  6. Step 6: Final answer
    x = 19,621.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.