Home / 13,279.20-19,917.60-4,514.40

Finding the Fourth Proportional to 13,279.20, 19,917.60 and 4,514.40

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Solution

The fourth proportional to 13,279.20, 19,917.60 and 4,514.40 is: 6,771.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.20 : 19,917.60 = 4,514.40 : x
  2. Step 2: Convert to fraction form
    13,279.20/19,917.60 = 4,514.40/x
  3. Step 3: Cross multiply
    13,279.20x = 19,917.60 × 4,514.40
  4. Step 4: Simplify right side
    13,279.20x = 89,916,013.44
  5. Step 5: Solve for x
    x = 89,916,013.44/13,279.20
  6. Step 6: Final answer
    x = 6,771.19

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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.