Home / 31,313.16-43,213.52-18,735.48

Finding the Fourth Proportional to 31,313.16, 43,213.52 and 18,735.48

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Solution

The fourth proportional to 31,313.16, 43,213.52 and 18,735.48 is: 25,855.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,313.16 : 43,213.52 = 18,735.48 : x
  2. Step 2: Convert to fraction form
    31,313.16/43,213.52 = 18,735.48/x
  3. Step 3: Cross multiply
    31,313.16x = 43,213.52 × 18,735.48
  4. Step 4: Simplify right side
    31,313.16x = 809,626,039.69
  5. Step 5: Solve for x
    x = 809,626,039.69/31,313.16
  6. Step 6: Final answer
    x = 25,855.78

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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.