Home / 18,520.85-25,558.54-10,563.21

Finding the Fourth Proportional to 18,520.85, 25,558.54 and 10,563.21

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Solution

The fourth proportional to 18,520.85, 25,558.54 and 10,563.21 is: 14,577.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.85 : 25,558.54 = 10,563.21 : x
  2. Step 2: Convert to fraction form
    18,520.85/25,558.54 = 10,563.21/x
  3. Step 3: Cross multiply
    18,520.85x = 25,558.54 × 10,563.21
  4. Step 4: Simplify right side
    18,520.85x = 269,980,198.91
  5. Step 5: Solve for x
    x = 269,980,198.91/18,520.85
  6. Step 6: Final answer
    x = 14,577.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.