Home / 12,279.45-18,419.10-3,514.39

Finding the Fourth Proportional to 12,279.45, 18,419.10 and 3,514.39

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Solution

The fourth proportional to 12,279.45, 18,419.10 and 3,514.39 is: 5,271.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.45 : 18,419.10 = 3,514.39 : x
  2. Step 2: Convert to fraction form
    12,279.45/18,419.10 = 3,514.39/x
  3. Step 3: Cross multiply
    12,279.45x = 18,419.10 × 3,514.39
  4. Step 4: Simplify right side
    12,279.45x = 64,731,841.62
  5. Step 5: Solve for x
    x = 64,731,841.62/12,279.45
  6. Step 6: Final answer
    x = 5,271.56

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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.