Home / 12,172.47-18,259.31-3,408.27

Finding the Fourth Proportional to 12,172.47, 18,259.31 and 3,408.27

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Solution

The fourth proportional to 12,172.47, 18,259.31 and 3,408.27 is: 5,112.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.47 : 18,259.31 = 3,408.27 : x
  2. Step 2: Convert to fraction form
    12,172.47/18,259.31 = 3,408.27/x
  3. Step 3: Cross multiply
    12,172.47x = 18,259.31 × 3,408.27
  4. Step 4: Simplify right side
    12,172.47x = 62,232,658.49
  5. Step 5: Solve for x
    x = 62,232,658.49/12,172.47
  6. Step 6: Final answer
    x = 5,112.57

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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.