Home / 43,845.68-65,778.26-12,678.56

Finding the Fourth Proportional to 43,845.68, 65,778.26 and 12,678.56

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Solution

The fourth proportional to 43,845.68, 65,778.26 and 12,678.56 is: 19,020.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,845.68 : 65,778.26 = 12,678.56 : x
  2. Step 2: Convert to fraction form
    43,845.68/65,778.26 = 12,678.56/x
  3. Step 3: Cross multiply
    43,845.68x = 65,778.26 × 12,678.56
  4. Step 4: Simplify right side
    43,845.68x = 833,973,616.11
  5. Step 5: Solve for x
    x = 833,973,616.11/43,845.68
  6. Step 6: Final answer
    x = 19,020.66

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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.