Home / 19,087.19-28,616.94-12,831.69

Finding the Fourth Proportional to 19,087.19, 28,616.94 and 12,831.69

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Solution

The fourth proportional to 19,087.19, 28,616.94 and 12,831.69 is: 19,238.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,087.19 : 28,616.94 = 12,831.69 : x
  2. Step 2: Convert to fraction form
    19,087.19/28,616.94 = 12,831.69/x
  3. Step 3: Cross multiply
    19,087.19x = 28,616.94 × 12,831.69
  4. Step 4: Simplify right side
    19,087.19x = 367,203,591.82
  5. Step 5: Solve for x
    x = 367,203,591.82/19,087.19
  6. Step 6: Final answer
    x = 19,238.22

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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.