Home / 38,989.34-53,808.48-21,992.72

Finding the Fourth Proportional to 38,989.34, 53,808.48 and 21,992.72

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Solution

The fourth proportional to 38,989.34, 53,808.48 and 21,992.72 is: 30,351.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,989.34 : 53,808.48 = 21,992.72 : x
  2. Step 2: Convert to fraction form
    38,989.34/53,808.48 = 21,992.72/x
  3. Step 3: Cross multiply
    38,989.34x = 53,808.48 × 21,992.72
  4. Step 4: Simplify right side
    38,989.34x = 1,183,394,834.27
  5. Step 5: Solve for x
    x = 1,183,394,834.27/38,989.34
  6. Step 6: Final answer
    x = 30,351.75

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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.