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Finding the Fourth Proportional to 55,173.85, 82,760.98 and 13,620.85

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Solution

The fourth proportional to 55,173.85, 82,760.98 and 13,620.85 is: 20,431.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,173.85 : 82,760.98 = 13,620.85 : x
  2. Step 2: Convert to fraction form
    55,173.85/82,760.98 = 13,620.85/x
  3. Step 3: Cross multiply
    55,173.85x = 82,760.98 × 13,620.85
  4. Step 4: Simplify right side
    55,173.85x = 1,127,274,653.48
  5. Step 5: Solve for x
    x = 1,127,274,653.48/55,173.85
  6. Step 6: Final answer
    x = 20,431.32

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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.