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Finding the Fourth Proportional to 14,815.66, 20,447.54 and 8,444.58

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Solution

The fourth proportional to 14,815.66, 20,447.54 and 8,444.58 is: 11,654.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,815.66 : 20,447.54 = 8,444.58 : x
  2. Step 2: Convert to fraction form
    14,815.66/20,447.54 = 8,444.58/x
  3. Step 3: Cross multiply
    14,815.66x = 20,447.54 × 8,444.58
  4. Step 4: Simplify right side
    14,815.66x = 172,670,887.33
  5. Step 5: Solve for x
    x = 172,670,887.33/14,815.66
  6. Step 6: Final answer
    x = 11,654.62

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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.