Home / 19,729.20-27,233.84-12,176.76

Finding the Fourth Proportional to 19,729.20, 27,233.84 and 12,176.76

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Solution

The fourth proportional to 19,729.20, 27,233.84 and 12,176.76 is: 16,808.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,729.20 : 27,233.84 = 12,176.76 : x
  2. Step 2: Convert to fraction form
    19,729.20/27,233.84 = 12,176.76/x
  3. Step 3: Cross multiply
    19,729.20x = 27,233.84 × 12,176.76
  4. Step 4: Simplify right side
    19,729.20x = 331,619,933.56
  5. Step 5: Solve for x
    x = 331,619,933.56/19,729.20
  6. Step 6: Final answer
    x = 16,808.58

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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.