Home / 21,949.66-30,290.30-11,877.88

Finding the Fourth Proportional to 21,949.66, 30,290.30 and 11,877.88

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Solution

The fourth proportional to 21,949.66, 30,290.30 and 11,877.88 is: 16,391.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.66 : 30,290.30 = 11,877.88 : x
  2. Step 2: Convert to fraction form
    21,949.66/30,290.30 = 11,877.88/x
  3. Step 3: Cross multiply
    21,949.66x = 30,290.30 × 11,877.88
  4. Step 4: Simplify right side
    21,949.66x = 359,784,548.56
  5. Step 5: Solve for x
    x = 359,784,548.56/21,949.66
  6. Step 6: Final answer
    x = 16,391.35

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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.