Home / 12,629.76-18,947.04-4,309.44

Finding the Fourth Proportional to 12,629.76, 18,947.04 and 4,309.44

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Solution

The fourth proportional to 12,629.76, 18,947.04 and 4,309.44 is: 6,464.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.76 : 18,947.04 = 4,309.44 : x
  2. Step 2: Convert to fraction form
    12,629.76/18,947.04 = 4,309.44/x
  3. Step 3: Cross multiply
    12,629.76x = 18,947.04 × 4,309.44
  4. Step 4: Simplify right side
    12,629.76x = 81,651,132.06
  5. Step 5: Solve for x
    x = 81,651,132.06/12,629.76
  6. Step 6: Final answer
    x = 6,464.98

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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.