Home / 38,876.45-53,653.82-21,881.21

Finding the Fourth Proportional to 38,876.45, 53,653.82 and 21,881.21

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Solution

The fourth proportional to 38,876.45, 53,653.82 and 21,881.21 is: 30,198.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,876.45 : 53,653.82 = 21,881.21 : x
  2. Step 2: Convert to fraction form
    38,876.45/53,653.82 = 21,881.21/x
  3. Step 3: Cross multiply
    38,876.45x = 53,653.82 × 21,881.21
  4. Step 4: Simplify right side
    38,876.45x = 1,174,010,125.05
  5. Step 5: Solve for x
    x = 1,174,010,125.05/38,876.45
  6. Step 6: Final answer
    x = 30,198.49

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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.