Home / 21,189.73-29,243.22-12,237.61

Finding the Fourth Proportional to 21,189.73, 29,243.22 and 12,237.61

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Solution

The fourth proportional to 21,189.73, 29,243.22 and 12,237.61 is: 16,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.73 : 29,243.22 = 12,237.61 : x
  2. Step 2: Convert to fraction form
    21,189.73/29,243.22 = 12,237.61/x
  3. Step 3: Cross multiply
    21,189.73x = 29,243.22 × 12,237.61
  4. Step 4: Simplify right side
    21,189.73x = 357,867,121.50
  5. Step 5: Solve for x
    x = 357,867,121.50/21,189.73
  6. Step 6: Final answer
    x = 16,888.71

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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.