Home / 12,279.55-18,419.32-3,514.46

Finding the Fourth Proportional to 12,279.55, 18,419.32 and 3,514.46

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Solution

The fourth proportional to 12,279.55, 18,419.32 and 3,514.46 is: 5,271.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,279.55 : 18,419.32 = 3,514.46 : x
  2. Step 2: Convert to fraction form
    12,279.55/18,419.32 = 3,514.46/x
  3. Step 3: Cross multiply
    12,279.55x = 18,419.32 × 3,514.46
  4. Step 4: Simplify right side
    12,279.55x = 64,733,945.79
  5. Step 5: Solve for x
    x = 64,733,945.79/12,279.55
  6. Step 6: Final answer
    x = 5,271.69

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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.