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Finding the Fourth Proportional to 36,984.80, 55,520.40 and 21,202.40

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Solution

The fourth proportional to 36,984.80, 55,520.40 and 21,202.40 is: 31,828.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,984.80 : 55,520.40 = 21,202.40 : x
  2. Step 2: Convert to fraction form
    36,984.80/55,520.40 = 21,202.40/x
  3. Step 3: Cross multiply
    36,984.80x = 55,520.40 × 21,202.40
  4. Step 4: Simplify right side
    36,984.80x = 1,177,165,728.96
  5. Step 5: Solve for x
    x = 1,177,165,728.96/36,984.80
  6. Step 6: Final answer
    x = 31,828.37

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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.