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Finding the Fourth Proportional to 18,108.69, 27,157.52 and 12,522.28

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Solution

The fourth proportional to 18,108.69, 27,157.52 and 12,522.28 is: 18,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,108.69 : 27,157.52 = 12,522.28 : x
  2. Step 2: Convert to fraction form
    18,108.69/27,157.52 = 12,522.28/x
  3. Step 3: Cross multiply
    18,108.69x = 27,157.52 × 12,522.28
  4. Step 4: Simplify right side
    18,108.69x = 340,073,986.00
  5. Step 5: Solve for x
    x = 340,073,986.00/18,108.69
  6. Step 6: Final answer
    x = 18,779.60

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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.