Home / 12,523.20-18,784.80-3,163.20

Finding the Fourth Proportional to 12,523.20, 18,784.80 and 3,163.20

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Solution

The fourth proportional to 12,523.20, 18,784.80 and 3,163.20 is: 4,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,523.20 : 18,784.80 = 3,163.20 : x
  2. Step 2: Convert to fraction form
    12,523.20/18,784.80 = 3,163.20/x
  3. Step 3: Cross multiply
    12,523.20x = 18,784.80 × 3,163.20
  4. Step 4: Simplify right side
    12,523.20x = 59,420,079.36
  5. Step 5: Solve for x
    x = 59,420,079.36/12,523.20
  6. Step 6: Final answer
    x = 4,744.80

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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.