Home / 12,746.88-19,122.39-3,979.98

Finding the Fourth Proportional to 12,746.88, 19,122.39 and 3,979.98

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Solution

The fourth proportional to 12,746.88, 19,122.39 and 3,979.98 is: 5,970.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,746.88 : 19,122.39 = 3,979.98 : x
  2. Step 2: Convert to fraction form
    12,746.88/19,122.39 = 3,979.98/x
  3. Step 3: Cross multiply
    12,746.88x = 19,122.39 × 3,979.98
  4. Step 4: Simplify right side
    12,746.88x = 76,106,729.75
  5. Step 5: Solve for x
    x = 76,106,729.75/12,746.88
  6. Step 6: Final answer
    x = 5,970.62

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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.