Home / 12,378.88-18,571.02-4,983.58

Finding the Fourth Proportional to 12,378.88, 18,571.02 and 4,983.58

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Solution

The fourth proportional to 12,378.88, 18,571.02 and 4,983.58 is: 7,476.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.88 : 18,571.02 = 4,983.58 : x
  2. Step 2: Convert to fraction form
    12,378.88/18,571.02 = 4,983.58/x
  3. Step 3: Cross multiply
    12,378.88x = 18,571.02 × 4,983.58
  4. Step 4: Simplify right side
    12,378.88x = 92,550,163.85
  5. Step 5: Solve for x
    x = 92,550,163.85/12,378.88
  6. Step 6: Final answer
    x = 7,476.46

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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.