Home / 18,131.74-25,023.60-12,175.81

Finding the Fourth Proportional to 18,131.74, 25,023.60 and 12,175.81

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Solution

The fourth proportional to 18,131.74, 25,023.60 and 12,175.81 is: 16,803.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,131.74 : 25,023.60 = 12,175.81 : x
  2. Step 2: Convert to fraction form
    18,131.74/25,023.60 = 12,175.81/x
  3. Step 3: Cross multiply
    18,131.74x = 25,023.60 × 12,175.81
  4. Step 4: Simplify right side
    18,131.74x = 304,682,413.12
  5. Step 5: Solve for x
    x = 304,682,413.12/18,131.74
  6. Step 6: Final answer
    x = 16,803.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.