Home / 20,286.36-30,435.36-11,973.96

Finding the Fourth Proportional to 20,286.36, 30,435.36 and 11,973.96

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Solution

The fourth proportional to 20,286.36, 30,435.36 and 11,973.96 is: 17,964.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,286.36 : 30,435.36 = 11,973.96 : x
  2. Step 2: Convert to fraction form
    20,286.36/30,435.36 = 11,973.96/x
  3. Step 3: Cross multiply
    20,286.36x = 30,435.36 × 11,973.96
  4. Step 4: Simplify right side
    20,286.36x = 364,431,783.23
  5. Step 5: Solve for x
    x = 364,431,783.23/20,286.36
  6. Step 6: Final answer
    x = 17,964.38

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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.