Home / 12,130.75-18,195.31-3,365.74

Finding the Fourth Proportional to 12,130.75, 18,195.31 and 3,365.74

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Solution

The fourth proportional to 12,130.75, 18,195.31 and 3,365.74 is: 5,048.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.75 : 18,195.31 = 3,365.74 : x
  2. Step 2: Convert to fraction form
    12,130.75/18,195.31 = 3,365.74/x
  3. Step 3: Cross multiply
    12,130.75x = 18,195.31 × 3,365.74
  4. Step 4: Simplify right side
    12,130.75x = 61,240,682.68
  5. Step 5: Solve for x
    x = 61,240,682.68/12,130.75
  6. Step 6: Final answer
    x = 5,048.38

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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.