Home / 38,919.12-53,705.34-21,922.62

Finding the Fourth Proportional to 38,919.12, 53,705.34 and 21,922.62

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Solution

The fourth proportional to 38,919.12, 53,705.34 and 21,922.62 is: 30,251.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,919.12 : 53,705.34 = 21,922.62 : x
  2. Step 2: Convert to fraction form
    38,919.12/53,705.34 = 21,922.62/x
  3. Step 3: Cross multiply
    38,919.12x = 53,705.34 × 21,922.62
  4. Step 4: Simplify right side
    38,919.12x = 1,177,361,760.79
  5. Step 5: Solve for x
    x = 1,177,361,760.79/38,919.12
  6. Step 6: Final answer
    x = 30,251.50

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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.