Home / 20,848.73-28,771.25-11,288.57

Finding the Fourth Proportional to 20,848.73, 28,771.25 and 11,288.57

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Solution

The fourth proportional to 20,848.73, 28,771.25 and 11,288.57 is: 15,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.73 : 28,771.25 = 11,288.57 : x
  2. Step 2: Convert to fraction form
    20,848.73/28,771.25 = 11,288.57/x
  3. Step 3: Cross multiply
    20,848.73x = 28,771.25 × 11,288.57
  4. Step 4: Simplify right side
    20,848.73x = 324,786,069.31
  5. Step 5: Solve for x
    x = 324,786,069.31/20,848.73
  6. Step 6: Final answer
    x = 15,578.22

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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.