Home / 20,877.88-28,811.46-11,446.60

Finding the Fourth Proportional to 20,877.88, 28,811.46 and 11,446.60

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Solution

The fourth proportional to 20,877.88, 28,811.46 and 11,446.60 is: 15,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,877.88 : 28,811.46 = 11,446.60 : x
  2. Step 2: Convert to fraction form
    20,877.88/28,811.46 = 11,446.60/x
  3. Step 3: Cross multiply
    20,877.88x = 28,811.46 × 11,446.60
  4. Step 4: Simplify right side
    20,877.88x = 329,793,258.04
  5. Step 5: Solve for x
    x = 329,793,258.04/20,877.88
  6. Step 6: Final answer
    x = 15,796.30

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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.