Home / 18,558.75-27,768.38-13,022.90

Finding the Fourth Proportional to 18,558.75, 27,768.38 and 13,022.90

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Solution

The fourth proportional to 18,558.75, 27,768.38 and 13,022.90 is: 19,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,558.75 : 27,768.38 = 13,022.90 : x
  2. Step 2: Convert to fraction form
    18,558.75/27,768.38 = 13,022.90/x
  3. Step 3: Cross multiply
    18,558.75x = 27,768.38 × 13,022.90
  4. Step 4: Simplify right side
    18,558.75x = 361,624,631.95
  5. Step 5: Solve for x
    x = 361,624,631.95/18,558.75
  6. Step 6: Final answer
    x = 19,485.40

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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.