Home / 21,675.36-29,910.96-12,245.28

Finding the Fourth Proportional to 21,675.36, 29,910.96 and 12,245.28

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Solution

The fourth proportional to 21,675.36, 29,910.96 and 12,245.28 is: 16,897.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,675.36 : 29,910.96 = 12,245.28 : x
  2. Step 2: Convert to fraction form
    21,675.36/29,910.96 = 12,245.28/x
  3. Step 3: Cross multiply
    21,675.36x = 29,910.96 × 12,245.28
  4. Step 4: Simplify right side
    21,675.36x = 366,268,080.27
  5. Step 5: Solve for x
    x = 366,268,080.27/21,675.36
  6. Step 6: Final answer
    x = 16,897.90

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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.