Home / 38,578.05-53,237.44-21,582.21

Finding the Fourth Proportional to 38,578.05, 53,237.44 and 21,582.21

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Solution

The fourth proportional to 38,578.05, 53,237.44 and 21,582.21 is: 29,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,578.05 : 53,237.44 = 21,582.21 : x
  2. Step 2: Convert to fraction form
    38,578.05/53,237.44 = 21,582.21/x
  3. Step 3: Cross multiply
    38,578.05x = 53,237.44 × 21,582.21
  4. Step 4: Simplify right side
    38,578.05x = 1,148,981,609.94
  5. Step 5: Solve for x
    x = 1,148,981,609.94/38,578.05
  6. Step 6: Final answer
    x = 29,783.30

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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.