Home / 18,818.09-28,231.88-13,282.25

Finding the Fourth Proportional to 18,818.09, 28,231.88 and 13,282.25

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Solution

The fourth proportional to 18,818.09, 28,231.88 and 13,282.25 is: 19,926.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.09 : 28,231.88 = 13,282.25 : x
  2. Step 2: Convert to fraction form
    18,818.09/28,231.88 = 13,282.25/x
  3. Step 3: Cross multiply
    18,818.09x = 28,231.88 × 13,282.25
  4. Step 4: Simplify right side
    18,818.09x = 374,982,730.37
  5. Step 5: Solve for x
    x = 374,982,730.37/18,818.09
  6. Step 6: Final answer
    x = 19,926.72

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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.