Home / 22,557.44-31,129.32-12,486.56

Finding the Fourth Proportional to 22,557.44, 31,129.32 and 12,486.56

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Solution

The fourth proportional to 22,557.44, 31,129.32 and 12,486.56 is: 17,231.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,557.44 : 31,129.32 = 12,486.56 : x
  2. Step 2: Convert to fraction form
    22,557.44/31,129.32 = 12,486.56/x
  3. Step 3: Cross multiply
    22,557.44x = 31,129.32 × 12,486.56
  4. Step 4: Simplify right side
    22,557.44x = 388,698,121.94
  5. Step 5: Solve for x
    x = 388,698,121.94/22,557.44
  6. Step 6: Final answer
    x = 17,231.48

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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.