Home / 14,120.86-19,481.58-8,455.72

Finding the Fourth Proportional to 14,120.86, 19,481.58 and 8,455.72

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Solution

The fourth proportional to 14,120.86, 19,481.58 and 8,455.72 is: 11,665.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120.86 : 19,481.58 = 8,455.72 : x
  2. Step 2: Convert to fraction form
    14,120.86/19,481.58 = 8,455.72/x
  3. Step 3: Cross multiply
    14,120.86x = 19,481.58 × 8,455.72
  4. Step 4: Simplify right side
    14,120.86x = 164,730,785.64
  5. Step 5: Solve for x
    x = 164,730,785.64/14,120.86
  6. Step 6: Final answer
    x = 11,665.78

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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.