Home / 12,738.71-19,087.84-8,563.36

Finding the Fourth Proportional to 12,738.71, 19,087.84 and 8,563.36

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Solution

The fourth proportional to 12,738.71, 19,087.84 and 8,563.36 is: 12,831.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,738.71 : 19,087.84 = 8,563.36 : x
  2. Step 2: Convert to fraction form
    12,738.71/19,087.84 = 8,563.36/x
  3. Step 3: Cross multiply
    12,738.71x = 19,087.84 × 8,563.36
  4. Step 4: Simplify right side
    12,738.71x = 163,456,045.54
  5. Step 5: Solve for x
    x = 163,456,045.54/12,738.71
  6. Step 6: Final answer
    x = 12,831.44

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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.