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Finding the Fourth Proportional to 36,420.63, 54,630.98 and 20,827.32

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Solution

The fourth proportional to 36,420.63, 54,630.98 and 20,827.32 is: 31,241.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,420.63 : 54,630.98 = 20,827.32 : x
  2. Step 2: Convert to fraction form
    36,420.63/54,630.98 = 20,827.32/x
  3. Step 3: Cross multiply
    36,420.63x = 54,630.98 × 20,827.32
  4. Step 4: Simplify right side
    36,420.63x = 1,137,816,902.37
  5. Step 5: Solve for x
    x = 1,137,816,902.37/36,420.63
  6. Step 6: Final answer
    x = 31,241.00

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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.