Home / 12,279.72-18,419.58-3,514.67

Finding the Fourth Proportional to 12,279.72, 18,419.58 and 3,514.67

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Solution

The fourth proportional to 12,279.72, 18,419.58 and 3,514.67 is: 5,272.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.72 : 18,419.58 = 3,514.67 : x
  2. Step 2: Convert to fraction form
    12,279.72/18,419.58 = 3,514.67/x
  3. Step 3: Cross multiply
    12,279.72x = 18,419.58 × 3,514.67
  4. Step 4: Simplify right side
    12,279.72x = 64,738,653.14
  5. Step 5: Solve for x
    x = 64,738,653.14/12,279.72
  6. Step 6: Final answer
    x = 5,272.00

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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.