Home / 21,905.82-30,229.74-12,474.18

Finding the Fourth Proportional to 21,905.82, 30,229.74 and 12,474.18

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Solution

The fourth proportional to 21,905.82, 30,229.74 and 12,474.18 is: 17,214.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,905.82 : 30,229.74 = 12,474.18 : x
  2. Step 2: Convert to fraction form
    21,905.82/30,229.74 = 12,474.18/x
  3. Step 3: Cross multiply
    21,905.82x = 30,229.74 × 12,474.18
  4. Step 4: Simplify right side
    21,905.82x = 377,091,218.11
  5. Step 5: Solve for x
    x = 377,091,218.11/21,905.82
  6. Step 6: Final answer
    x = 17,214.20

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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.