Home / 12,987.37-19,480.92-4,222.63

Finding the Fourth Proportional to 12,987.37, 19,480.92 and 4,222.63

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Solution

The fourth proportional to 12,987.37, 19,480.92 and 4,222.63 is: 6,333.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.37 : 19,480.92 = 4,222.63 : x
  2. Step 2: Convert to fraction form
    12,987.37/19,480.92 = 4,222.63/x
  3. Step 3: Cross multiply
    12,987.37x = 19,480.92 × 4,222.63
  4. Step 4: Simplify right side
    12,987.37x = 82,260,717.22
  5. Step 5: Solve for x
    x = 82,260,717.22/12,987.37
  6. Step 6: Final answer
    x = 6,333.90

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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.