Home / 19,018.21-26,236.28-12,306

Finding the Fourth Proportional to 19,018.21, 26,236.28 and 12,306

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Solution

The fourth proportional to 19,018.21, 26,236.28 and 12,306 is: 16,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,018.21 : 26,236.28 = 12,306 : x
  2. Step 2: Convert to fraction form
    19,018.21/26,236.28 = 12,306/x
  3. Step 3: Cross multiply
    19,018.21x = 26,236.28 × 12,306
  4. Step 4: Simplify right side
    19,018.21x = 322,863,661.68
  5. Step 5: Solve for x
    x = 322,863,661.68/19,018.21
  6. Step 6: Final answer
    x = 16,976.55

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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.