Home / 28,519.19-39,343.39-18,450.87

Finding the Fourth Proportional to 28,519.19, 39,343.39 and 18,450.87

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Solution

The fourth proportional to 28,519.19, 39,343.39 and 18,450.87 is: 25,453.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.19 : 39,343.39 = 18,450.87 : x
  2. Step 2: Convert to fraction form
    28,519.19/39,343.39 = 18,450.87/x
  3. Step 3: Cross multiply
    28,519.19x = 39,343.39 × 18,450.87
  4. Step 4: Simplify right side
    28,519.19x = 725,919,801.89
  5. Step 5: Solve for x
    x = 725,919,801.89/28,519.19
  6. Step 6: Final answer
    x = 25,453.73

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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.