Home / 19,081.79-26,315.64-11,912.36

Finding the Fourth Proportional to 19,081.79, 26,315.64 and 11,912.36

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Solution

The fourth proportional to 19,081.79, 26,315.64 and 11,912.36 is: 16,428.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,081.79 : 26,315.64 = 11,912.36 : x
  2. Step 2: Convert to fraction form
    19,081.79/26,315.64 = 11,912.36/x
  3. Step 3: Cross multiply
    19,081.79x = 26,315.64 × 11,912.36
  4. Step 4: Simplify right side
    19,081.79x = 313,481,443.10
  5. Step 5: Solve for x
    x = 313,481,443.10/19,081.79
  6. Step 6: Final answer
    x = 16,428.30

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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.