Home / 19,089.70-28,635.27-5,239.78

Finding the Fourth Proportional to 19,089.70, 28,635.27 and 5,239.78

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Solution

The fourth proportional to 19,089.70, 28,635.27 and 5,239.78 is: 7,859.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,089.70 : 28,635.27 = 5,239.78 : x
  2. Step 2: Convert to fraction form
    19,089.70/28,635.27 = 5,239.78/x
  3. Step 3: Cross multiply
    19,089.70x = 28,635.27 × 5,239.78
  4. Step 4: Simplify right side
    19,089.70x = 150,042,515.04
  5. Step 5: Solve for x
    x = 150,042,515.04/19,089.70
  6. Step 6: Final answer
    x = 7,859.87

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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.