Home / 20,848.64-28,771.17-11,288.63

Finding the Fourth Proportional to 20,848.64, 28,771.17 and 11,288.63

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Solution

The fourth proportional to 20,848.64, 28,771.17 and 11,288.63 is: 15,578.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,848.64 : 28,771.17 = 11,288.63 : x
  2. Step 2: Convert to fraction form
    20,848.64/28,771.17 = 11,288.63/x
  3. Step 3: Cross multiply
    20,848.64x = 28,771.17 × 11,288.63
  4. Step 4: Simplify right side
    20,848.64x = 324,787,092.80
  5. Step 5: Solve for x
    x = 324,787,092.80/20,848.64
  6. Step 6: Final answer
    x = 15,578.33

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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.