Home / 12,939-19,412.46-8,994.30

Finding the Fourth Proportional to 12,939, 19,412.46 and 8,994.30

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Solution

The fourth proportional to 12,939, 19,412.46 and 8,994.30 is: 13,494.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939 : 19,412.46 = 8,994.30 : x
  2. Step 2: Convert to fraction form
    12,939/19,412.46 = 8,994.30/x
  3. Step 3: Cross multiply
    12,939x = 19,412.46 × 8,994.30
  4. Step 4: Simplify right side
    12,939x = 174,601,488.98
  5. Step 5: Solve for x
    x = 174,601,488.98/12,939
  6. Step 6: Final answer
    x = 13,494.20

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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.