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Finding the Fourth Proportional to 14,458.40, 19,951.44 and 8,489.60

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Solution

The fourth proportional to 14,458.40, 19,951.44 and 8,489.60 is: 11,714.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,458.40 : 19,951.44 = 8,489.60 : x
  2. Step 2: Convert to fraction form
    14,458.40/19,951.44 = 8,489.60/x
  3. Step 3: Cross multiply
    14,458.40x = 19,951.44 × 8,489.60
  4. Step 4: Simplify right side
    14,458.40x = 169,379,745.02
  5. Step 5: Solve for x
    x = 169,379,745.02/14,458.40
  6. Step 6: Final answer
    x = 11,714.97

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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.