Home / 18,965.55-28,446.09-11,924.78

Finding the Fourth Proportional to 18,965.55, 28,446.09 and 11,924.78

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Solution

The fourth proportional to 18,965.55, 28,446.09 and 11,924.78 is: 17,885.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,965.55 : 28,446.09 = 11,924.78 : x
  2. Step 2: Convert to fraction form
    18,965.55/28,446.09 = 11,924.78/x
  3. Step 3: Cross multiply
    18,965.55x = 28,446.09 × 11,924.78
  4. Step 4: Simplify right side
    18,965.55x = 339,213,222.88
  5. Step 5: Solve for x
    x = 339,213,222.88/18,965.55
  6. Step 6: Final answer
    x = 17,885.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.