Home / 12,130.40-18,195.60-3,365.66

Finding the Fourth Proportional to 12,130.40, 18,195.60 and 3,365.66

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Solution

The fourth proportional to 12,130.40, 18,195.60 and 3,365.66 is: 5,048.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.40 : 18,195.60 = 3,365.66 : x
  2. Step 2: Convert to fraction form
    12,130.40/18,195.60 = 3,365.66/x
  3. Step 3: Cross multiply
    12,130.40x = 18,195.60 × 3,365.66
  4. Step 4: Simplify right side
    12,130.40x = 61,240,112.12
  5. Step 5: Solve for x
    x = 61,240,112.12/12,130.40
  6. Step 6: Final answer
    x = 5,048.48

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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.