Home / 19,231.20-28,859.70-6,751.20

Finding the Fourth Proportional to 19,231.20, 28,859.70 and 6,751.20

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Solution

The fourth proportional to 19,231.20, 28,859.70 and 6,751.20 is: 10,131.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,231.20 : 28,859.70 = 6,751.20 : x
  2. Step 2: Convert to fraction form
    19,231.20/28,859.70 = 6,751.20/x
  3. Step 3: Cross multiply
    19,231.20x = 28,859.70 × 6,751.20
  4. Step 4: Simplify right side
    19,231.20x = 194,837,606.64
  5. Step 5: Solve for x
    x = 194,837,606.64/19,231.20
  6. Step 6: Final answer
    x = 10,131.33

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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.