Home / 20,641.11-30,935.61-11,261.58

Finding the Fourth Proportional to 20,641.11, 30,935.61 and 11,261.58

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Solution

The fourth proportional to 20,641.11, 30,935.61 and 11,261.58 is: 16,878.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.11 : 30,935.61 = 11,261.58 : x
  2. Step 2: Convert to fraction form
    20,641.11/30,935.61 = 11,261.58/x
  3. Step 3: Cross multiply
    20,641.11x = 30,935.61 × 11,261.58
  4. Step 4: Simplify right side
    20,641.11x = 348,383,846.86
  5. Step 5: Solve for x
    x = 348,383,846.86/20,641.11
  6. Step 6: Final answer
    x = 16,878.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.