Home / 14,277.72-19,714.20-11,128.44

Finding the Fourth Proportional to 14,277.72, 19,714.20 and 11,128.44

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Solution

The fourth proportional to 14,277.72, 19,714.20 and 11,128.44 is: 15,365.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,277.72 : 19,714.20 = 11,128.44 : x
  2. Step 2: Convert to fraction form
    14,277.72/19,714.20 = 11,128.44/x
  3. Step 3: Cross multiply
    14,277.72x = 19,714.20 × 11,128.44
  4. Step 4: Simplify right side
    14,277.72x = 219,388,291.85
  5. Step 5: Solve for x
    x = 219,388,291.85/14,277.72
  6. Step 6: Final answer
    x = 15,365.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.