Home / 13,784.42-20,660.21-7,928.73

Finding the Fourth Proportional to 13,784.42, 20,660.21 and 7,928.73

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Solution

The fourth proportional to 13,784.42, 20,660.21 and 7,928.73 is: 11,883.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784.42 : 20,660.21 = 7,928.73 : x
  2. Step 2: Convert to fraction form
    13,784.42/20,660.21 = 7,928.73/x
  3. Step 3: Cross multiply
    13,784.42x = 20,660.21 × 7,928.73
  4. Step 4: Simplify right side
    13,784.42x = 163,809,187.19
  5. Step 5: Solve for x
    x = 163,809,187.19/13,784.42
  6. Step 6: Final answer
    x = 11,883.65

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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.