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Finding the Fourth Proportional to 21,610.70, 32,403.09 and 8,447.39

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Solution

The fourth proportional to 21,610.70, 32,403.09 and 8,447.39 is: 12,666.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610.70 : 32,403.09 = 8,447.39 : x
  2. Step 2: Convert to fraction form
    21,610.70/32,403.09 = 8,447.39/x
  3. Step 3: Cross multiply
    21,610.70x = 32,403.09 × 8,447.39
  4. Step 4: Simplify right side
    21,610.70x = 273,721,538.44
  5. Step 5: Solve for x
    x = 273,721,538.44/21,610.70
  6. Step 6: Final answer
    x = 12,666.02

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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.