Home / 31,453.84-43,360.68-21,993.04

Finding the Fourth Proportional to 31,453.84, 43,360.68 and 21,993.04

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Solution

The fourth proportional to 31,453.84, 43,360.68 and 21,993.04 is: 30,318.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,453.84 : 43,360.68 = 21,993.04 : x
  2. Step 2: Convert to fraction form
    31,453.84/43,360.68 = 21,993.04/x
  3. Step 3: Cross multiply
    31,453.84x = 43,360.68 × 21,993.04
  4. Step 4: Simplify right side
    31,453.84x = 953,633,169.67
  5. Step 5: Solve for x
    x = 953,633,169.67/31,453.84
  6. Step 6: Final answer
    x = 30,318.50

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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.