Home / 20,694.81-30,982.37-18,558.23

Finding the Fourth Proportional to 20,694.81, 30,982.37 and 18,558.23

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Solution

The fourth proportional to 20,694.81, 30,982.37 and 18,558.23 is: 27,783.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.81 : 30,982.37 = 18,558.23 : x
  2. Step 2: Convert to fraction form
    20,694.81/30,982.37 = 18,558.23/x
  3. Step 3: Cross multiply
    20,694.81x = 30,982.37 × 18,558.23
  4. Step 4: Simplify right side
    20,694.81x = 574,977,948.41
  5. Step 5: Solve for x
    x = 574,977,948.41/20,694.81
  6. Step 6: Final answer
    x = 27,783.68

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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.