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Finding the Fourth Proportional to 13,783,906.80, 20,675,860.20 and 13,571,330.40

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Solution

The fourth proportional to 13,783,906.80, 20,675,860.20 and 13,571,330.40 is: 20,356,995.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,783,906.80 : 20,675,860.20 = 13,571,330.40 : x
  2. Step 2: Convert to fraction form
    13,783,906.80/20,675,860.20 = 13,571,330.40/x
  3. Step 3: Cross multiply
    13,783,906.80x = 20,675,860.20 × 13,571,330.40
  4. Step 4: Simplify right side
    13,783,906.80x = 280,598,930,078,410.06
  5. Step 5: Solve for x
    x = 280,598,930,078,410.06/13,783,906.80
  6. Step 6: Final answer
    x = 20,356,995.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.