Home / 31,786.84-43,883.46-28,421.56

Finding the Fourth Proportional to 31,786.84, 43,883.46 and 28,421.56

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Solution

The fourth proportional to 31,786.84, 43,883.46 and 28,421.56 is: 39,237.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,786.84 : 43,883.46 = 28,421.56 : x
  2. Step 2: Convert to fraction form
    31,786.84/43,883.46 = 28,421.56/x
  3. Step 3: Cross multiply
    31,786.84x = 43,883.46 × 28,421.56
  4. Step 4: Simplify right side
    31,786.84x = 1,247,236,391.40
  5. Step 5: Solve for x
    x = 1,247,236,391.40/31,786.84
  6. Step 6: Final answer
    x = 39,237.51

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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.