Home / 18,421.14-25,431.54-12,144.44

Finding the Fourth Proportional to 18,421.14, 25,431.54 and 12,144.44

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Solution

The fourth proportional to 18,421.14, 25,431.54 and 12,144.44 is: 16,766.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,421.14 : 25,431.54 = 12,144.44 : x
  2. Step 2: Convert to fraction form
    18,421.14/25,431.54 = 12,144.44/x
  3. Step 3: Cross multiply
    18,421.14x = 25,431.54 × 12,144.44
  4. Step 4: Simplify right side
    18,421.14x = 308,851,811.64
  5. Step 5: Solve for x
    x = 308,851,811.64/18,421.14
  6. Step 6: Final answer
    x = 16,766.16

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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.