Home / 22,272.07-30,735.66-12,840.63

Finding the Fourth Proportional to 22,272.07, 30,735.66 and 12,840.63

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Solution

The fourth proportional to 22,272.07, 30,735.66 and 12,840.63 is: 17,720.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,272.07 : 30,735.66 = 12,840.63 : x
  2. Step 2: Convert to fraction form
    22,272.07/30,735.66 = 12,840.63/x
  3. Step 3: Cross multiply
    22,272.07x = 30,735.66 × 12,840.63
  4. Step 4: Simplify right side
    22,272.07x = 394,665,237.87
  5. Step 5: Solve for x
    x = 394,665,237.87/22,272.07
  6. Step 6: Final answer
    x = 17,720.19

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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.