Home / 18,303.78-25,258.86-12,015.75

Finding the Fourth Proportional to 18,303.78, 25,258.86 and 12,015.75

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Solution

The fourth proportional to 18,303.78, 25,258.86 and 12,015.75 is: 16,581.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,303.78 : 25,258.86 = 12,015.75 : x
  2. Step 2: Convert to fraction form
    18,303.78/25,258.86 = 12,015.75/x
  3. Step 3: Cross multiply
    18,303.78x = 25,258.86 × 12,015.75
  4. Step 4: Simplify right side
    18,303.78x = 303,504,147.05
  5. Step 5: Solve for x
    x = 303,504,147.05/18,303.78
  6. Step 6: Final answer
    x = 16,581.50

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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.