Home / 18,684.79-25,786.81-11,885.95

Finding the Fourth Proportional to 18,684.79, 25,786.81 and 11,885.95

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Solution

The fourth proportional to 18,684.79, 25,786.81 and 11,885.95 is: 16,403.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684.79 : 25,786.81 = 11,885.95 : x
  2. Step 2: Convert to fraction form
    18,684.79/25,786.81 = 11,885.95/x
  3. Step 3: Cross multiply
    18,684.79x = 25,786.81 × 11,885.95
  4. Step 4: Simplify right side
    18,684.79x = 306,500,734.32
  5. Step 5: Solve for x
    x = 306,500,734.32/18,684.79
  6. Step 6: Final answer
    x = 16,403.76

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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.