Home / 18,516.93-25,561.80-11,811.75

Finding the Fourth Proportional to 18,516.93, 25,561.80 and 11,811.75

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Solution

The fourth proportional to 18,516.93, 25,561.80 and 11,811.75 is: 16,305.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,516.93 : 25,561.80 = 11,811.75 : x
  2. Step 2: Convert to fraction form
    18,516.93/25,561.80 = 11,811.75/x
  3. Step 3: Cross multiply
    18,516.93x = 25,561.80 × 11,811.75
  4. Step 4: Simplify right side
    18,516.93x = 301,929,591.15
  5. Step 5: Solve for x
    x = 301,929,591.15/18,516.93
  6. Step 6: Final answer
    x = 16,305.60

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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.