Home / 18,741.57-28,116.97-13,205.72

Finding the Fourth Proportional to 18,741.57, 28,116.97 and 13,205.72

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Solution

The fourth proportional to 18,741.57, 28,116.97 and 13,205.72 is: 19,811.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,741.57 : 28,116.97 = 13,205.72 : x
  2. Step 2: Convert to fraction form
    18,741.57/28,116.97 = 13,205.72/x
  3. Step 3: Cross multiply
    18,741.57x = 28,116.97 × 13,205.72
  4. Step 4: Simplify right side
    18,741.57x = 371,304,870.35
  5. Step 5: Solve for x
    x = 371,304,870.35/18,741.57
  6. Step 6: Final answer
    x = 19,811.83

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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.