Home / 43,439.78-65,145.78-13,850.69

Finding the Fourth Proportional to 43,439.78, 65,145.78 and 13,850.69

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Solution

The fourth proportional to 43,439.78, 65,145.78 and 13,850.69 is: 20,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,439.78 : 65,145.78 = 13,850.69 : x
  2. Step 2: Convert to fraction form
    43,439.78/65,145.78 = 13,850.69/x
  3. Step 3: Cross multiply
    43,439.78x = 65,145.78 × 13,850.69
  4. Step 4: Simplify right side
    43,439.78x = 902,313,677.86
  5. Step 5: Solve for x
    x = 902,313,677.86/43,439.78
  6. Step 6: Final answer
    x = 20,771.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.