Home / 22,728.88-31,355.70-13,293.28

Finding the Fourth Proportional to 22,728.88, 31,355.70 and 13,293.28

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Solution

The fourth proportional to 22,728.88, 31,355.70 and 13,293.28 is: 18,338.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,728.88 : 31,355.70 = 13,293.28 : x
  2. Step 2: Convert to fraction form
    22,728.88/31,355.70 = 13,293.28/x
  3. Step 3: Cross multiply
    22,728.88x = 31,355.70 × 13,293.28
  4. Step 4: Simplify right side
    22,728.88x = 416,820,099.70
  5. Step 5: Solve for x
    x = 416,820,099.70/22,728.88
  6. Step 6: Final answer
    x = 18,338.79

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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.