Home / 21,083.73-31,625.60-8,609.63

Finding the Fourth Proportional to 21,083.73, 31,625.60 and 8,609.63

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Solution

The fourth proportional to 21,083.73, 31,625.60 and 8,609.63 is: 12,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,083.73 : 31,625.60 = 8,609.63 : x
  2. Step 2: Convert to fraction form
    21,083.73/31,625.60 = 8,609.63/x
  3. Step 3: Cross multiply
    21,083.73x = 31,625.60 × 8,609.63
  4. Step 4: Simplify right side
    21,083.73x = 272,284,739.68
  5. Step 5: Solve for x
    x = 272,284,739.68/21,083.73
  6. Step 6: Final answer
    x = 12,914.45

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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.