Home / 18,550.24-25,585.36-12,885

Finding the Fourth Proportional to 18,550.24, 25,585.36 and 12,885

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Solution

The fourth proportional to 18,550.24, 25,585.36 and 12,885 is: 17,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,550.24 : 25,585.36 = 12,885 : x
  2. Step 2: Convert to fraction form
    18,550.24/25,585.36 = 12,885/x
  3. Step 3: Cross multiply
    18,550.24x = 25,585.36 × 12,885
  4. Step 4: Simplify right side
    18,550.24x = 329,667,363.60
  5. Step 5: Solve for x
    x = 329,667,363.60/18,550.24
  6. Step 6: Final answer
    x = 17,771.60

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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.