Home / 21,753.05-30,016.53-13,252.09

Finding the Fourth Proportional to 21,753.05, 30,016.53 and 13,252.09

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Solution

The fourth proportional to 21,753.05, 30,016.53 and 13,252.09 is: 18,286.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,753.05 : 30,016.53 = 13,252.09 : x
  2. Step 2: Convert to fraction form
    21,753.05/30,016.53 = 13,252.09/x
  3. Step 3: Cross multiply
    21,753.05x = 30,016.53 × 13,252.09
  4. Step 4: Simplify right side
    21,753.05x = 397,781,682.01
  5. Step 5: Solve for x
    x = 397,781,682.01/21,753.05
  6. Step 6: Final answer
    x = 18,286.25

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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.