Home / 13,851.12-20,783.47-8,584.73

Finding the Fourth Proportional to 13,851.12, 20,783.47 and 8,584.73

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Solution

The fourth proportional to 13,851.12, 20,783.47 and 8,584.73 is: 12,881.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.12 : 20,783.47 = 8,584.73 : x
  2. Step 2: Convert to fraction form
    13,851.12/20,783.47 = 8,584.73/x
  3. Step 3: Cross multiply
    13,851.12x = 20,783.47 × 8,584.73
  4. Step 4: Simplify right side
    13,851.12x = 178,420,563.98
  5. Step 5: Solve for x
    x = 178,420,563.98/13,851.12
  6. Step 6: Final answer
    x = 12,881.31

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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.