Home / 20,891.73-28,830.54-11,460.27

Finding the Fourth Proportional to 20,891.73, 28,830.54 and 11,460.27

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Solution

The fourth proportional to 20,891.73, 28,830.54 and 11,460.27 is: 15,815.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,891.73 : 28,830.54 = 11,460.27 : x
  2. Step 2: Convert to fraction form
    20,891.73/28,830.54 = 11,460.27/x
  3. Step 3: Cross multiply
    20,891.73x = 28,830.54 × 11,460.27
  4. Step 4: Simplify right side
    20,891.73x = 330,405,772.65
  5. Step 5: Solve for x
    x = 330,405,772.65/20,891.73
  6. Step 6: Final answer
    x = 15,815.15

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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.