Home / 21,769.88-30,042.96-13,272.44

Finding the Fourth Proportional to 21,769.88, 30,042.96 and 13,272.44

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Solution

The fourth proportional to 21,769.88, 30,042.96 and 13,272.44 is: 18,316.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,769.88 : 30,042.96 = 13,272.44 : x
  2. Step 2: Convert to fraction form
    21,769.88/30,042.96 = 13,272.44/x
  3. Step 3: Cross multiply
    21,769.88x = 30,042.96 × 13,272.44
  4. Step 4: Simplify right side
    21,769.88x = 398,743,384.02
  5. Step 5: Solve for x
    x = 398,743,384.02/21,769.88
  6. Step 6: Final answer
    x = 18,316.29

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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.