Home / 12,519.37-18,778.38-3,159.28

Finding the Fourth Proportional to 12,519.37, 18,778.38 and 3,159.28

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Solution

The fourth proportional to 12,519.37, 18,778.38 and 3,159.28 is: 4,738.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,519.37 : 18,778.38 = 3,159.28 : x
  2. Step 2: Convert to fraction form
    12,519.37/18,778.38 = 3,159.28/x
  3. Step 3: Cross multiply
    12,519.37x = 18,778.38 × 3,159.28
  4. Step 4: Simplify right side
    12,519.37x = 59,326,160.37
  5. Step 5: Solve for x
    x = 59,326,160.37/12,519.37
  6. Step 6: Final answer
    x = 4,738.75

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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.