Home / 12,551.51-18,826.79-3,786.19

Finding the Fourth Proportional to 12,551.51, 18,826.79 and 3,786.19

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Solution

The fourth proportional to 12,551.51, 18,826.79 and 3,786.19 is: 5,679.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.51 : 18,826.79 = 3,786.19 : x
  2. Step 2: Convert to fraction form
    12,551.51/18,826.79 = 3,786.19/x
  3. Step 3: Cross multiply
    12,551.51x = 18,826.79 × 3,786.19
  4. Step 4: Simplify right side
    12,551.51x = 71,281,738.03
  5. Step 5: Solve for x
    x = 71,281,738.03/12,551.51
  6. Step 6: Final answer
    x = 5,679.14

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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.