Home / 21,187.13-29,243.41-12,233.30

Finding the Fourth Proportional to 21,187.13, 29,243.41 and 12,233.30

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Solution

The fourth proportional to 21,187.13, 29,243.41 and 12,233.30 is: 16,884.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187.13 : 29,243.41 = 12,233.30 : x
  2. Step 2: Convert to fraction form
    21,187.13/29,243.41 = 12,233.30/x
  3. Step 3: Cross multiply
    21,187.13x = 29,243.41 × 12,233.30
  4. Step 4: Simplify right side
    21,187.13x = 357,743,230.75
  5. Step 5: Solve for x
    x = 357,743,230.75/21,187.13
  6. Step 6: Final answer
    x = 16,884.94

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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.