Home / 18,419.93-25,399.35-12,441.21

Finding the Fourth Proportional to 18,419.93, 25,399.35 and 12,441.21

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Solution

The fourth proportional to 18,419.93, 25,399.35 and 12,441.21 is: 17,155.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.93 : 25,399.35 = 12,441.21 : x
  2. Step 2: Convert to fraction form
    18,419.93/25,399.35 = 12,441.21/x
  3. Step 3: Cross multiply
    18,419.93x = 25,399.35 × 12,441.21
  4. Step 4: Simplify right side
    18,419.93x = 315,998,647.21
  5. Step 5: Solve for x
    x = 315,998,647.21/18,419.93
  6. Step 6: Final answer
    x = 17,155.26

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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.