Home / 20,168.54-27,830.45-11,214.60

Finding the Fourth Proportional to 20,168.54, 27,830.45 and 11,214.60

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Solution

The fourth proportional to 20,168.54, 27,830.45 and 11,214.60 is: 15,474.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.54 : 27,830.45 = 11,214.60 : x
  2. Step 2: Convert to fraction form
    20,168.54/27,830.45 = 11,214.60/x
  3. Step 3: Cross multiply
    20,168.54x = 27,830.45 × 11,214.60
  4. Step 4: Simplify right side
    20,168.54x = 312,107,288.24
  5. Step 5: Solve for x
    x = 312,107,288.24/20,168.54
  6. Step 6: Final answer
    x = 15,474.96

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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.