Home / 38,578.32-53,238.60-21,811.68

Finding the Fourth Proportional to 38,578.32, 53,238.60 and 21,811.68

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Solution

The fourth proportional to 38,578.32, 53,238.60 and 21,811.68 is: 30,100.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,578.32 : 53,238.60 = 21,811.68 : x
  2. Step 2: Convert to fraction form
    38,578.32/53,238.60 = 21,811.68/x
  3. Step 3: Cross multiply
    38,578.32x = 53,238.60 × 21,811.68
  4. Step 4: Simplify right side
    38,578.32x = 1,161,223,306.85
  5. Step 5: Solve for x
    x = 1,161,223,306.85/38,578.32
  6. Step 6: Final answer
    x = 30,100.41

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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.