Home / 12,809.21-19,214.39-3,923.89

Finding the Fourth Proportional to 12,809.21, 19,214.39 and 3,923.89

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Solution

The fourth proportional to 12,809.21, 19,214.39 and 3,923.89 is: 5,886.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,809.21 : 19,214.39 = 3,923.89 : x
  2. Step 2: Convert to fraction form
    12,809.21/19,214.39 = 3,923.89/x
  3. Step 3: Cross multiply
    12,809.21x = 19,214.39 × 3,923.89
  4. Step 4: Simplify right side
    12,809.21x = 75,395,124.33
  5. Step 5: Solve for x
    x = 75,395,124.33/12,809.21
  6. Step 6: Final answer
    x = 5,886.01

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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.