Home / 18,771.54-25,895.60-12,400.62

Finding the Fourth Proportional to 18,771.54, 25,895.60 and 12,400.62

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Solution

The fourth proportional to 18,771.54, 25,895.60 and 12,400.62 is: 17,106.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.54 : 25,895.60 = 12,400.62 : x
  2. Step 2: Convert to fraction form
    18,771.54/25,895.60 = 12,400.62/x
  3. Step 3: Cross multiply
    18,771.54x = 25,895.60 × 12,400.62
  4. Step 4: Simplify right side
    18,771.54x = 321,121,495.27
  5. Step 5: Solve for x
    x = 321,121,495.27/18,771.54
  6. Step 6: Final answer
    x = 17,106.83

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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.