Home / 20,076.80-27,709.85-11,584.40

Finding the Fourth Proportional to 20,076.80, 27,709.85 and 11,584.40

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Solution

The fourth proportional to 20,076.80, 27,709.85 and 11,584.40 is: 15,988.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.80 : 27,709.85 = 11,584.40 : x
  2. Step 2: Convert to fraction form
    20,076.80/27,709.85 = 11,584.40/x
  3. Step 3: Cross multiply
    20,076.80x = 27,709.85 × 11,584.40
  4. Step 4: Simplify right side
    20,076.80x = 321,001,876.75
  5. Step 5: Solve for x
    x = 321,001,876.75/20,076.80
  6. Step 6: Final answer
    x = 15,988.70

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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.