Home / 19,012.20-28,518.30-11,215.50

Finding the Fourth Proportional to 19,012.20, 28,518.30 and 11,215.50

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Solution

The fourth proportional to 19,012.20, 28,518.30 and 11,215.50 is: 16,823.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,012.20 : 28,518.30 = 11,215.50 : x
  2. Step 2: Convert to fraction form
    19,012.20/28,518.30 = 11,215.50/x
  3. Step 3: Cross multiply
    19,012.20x = 28,518.30 × 11,215.50
  4. Step 4: Simplify right side
    19,012.20x = 319,846,993.65
  5. Step 5: Solve for x
    x = 319,846,993.65/19,012.20
  6. Step 6: Final answer
    x = 16,823.25

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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.