Home / 12,788.98-19,170.94-6,123.59

Finding the Fourth Proportional to 12,788.98, 19,170.94 and 6,123.59

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Solution

The fourth proportional to 12,788.98, 19,170.94 and 6,123.59 is: 9,179.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.98 : 19,170.94 = 6,123.59 : x
  2. Step 2: Convert to fraction form
    12,788.98/19,170.94 = 6,123.59/x
  3. Step 3: Cross multiply
    12,788.98x = 19,170.94 × 6,123.59
  4. Step 4: Simplify right side
    12,788.98x = 117,395,009.09
  5. Step 5: Solve for x
    x = 117,395,009.09/12,788.98
  6. Step 6: Final answer
    x = 9,179.39

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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.