Home / 18,520.62-25,558.47-10,137.12

Finding the Fourth Proportional to 18,520.62, 25,558.47 and 10,137.12

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Solution

The fourth proportional to 18,520.62, 25,558.47 and 10,137.12 is: 13,989.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.62 : 25,558.47 = 10,137.12 : x
  2. Step 2: Convert to fraction form
    18,520.62/25,558.47 = 10,137.12/x
  3. Step 3: Cross multiply
    18,520.62x = 25,558.47 × 10,137.12
  4. Step 4: Simplify right side
    18,520.62x = 259,089,277.41
  5. Step 5: Solve for x
    x = 259,089,277.41/18,520.62
  6. Step 6: Final answer
    x = 13,989.23

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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.