Home / 12,163.37-16,781.58-7,125.98

Finding the Fourth Proportional to 12,163.37, 16,781.58 and 7,125.98

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Solution

The fourth proportional to 12,163.37, 16,781.58 and 7,125.98 is: 9,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.37 : 16,781.58 = 7,125.98 : x
  2. Step 2: Convert to fraction form
    12,163.37/16,781.58 = 7,125.98/x
  3. Step 3: Cross multiply
    12,163.37x = 16,781.58 × 7,125.98
  4. Step 4: Simplify right side
    12,163.37x = 119,585,119.54
  5. Step 5: Solve for x
    x = 119,585,119.54/12,163.37
  6. Step 6: Final answer
    x = 9,831.58

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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.