Home / 12,180.10-18,270.64-3,860.26

Finding the Fourth Proportional to 12,180.10, 18,270.64 and 3,860.26

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Solution

The fourth proportional to 12,180.10, 18,270.64 and 3,860.26 is: 5,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,180.10 : 18,270.64 = 3,860.26 : x
  2. Step 2: Convert to fraction form
    12,180.10/18,270.64 = 3,860.26/x
  3. Step 3: Cross multiply
    12,180.10x = 18,270.64 × 3,860.26
  4. Step 4: Simplify right side
    12,180.10x = 70,529,420.77
  5. Step 5: Solve for x
    x = 70,529,420.77/12,180.10
  6. Step 6: Final answer
    x = 5,790.55

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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.