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Finding the Fourth Proportional to 18,110.10, 27,165.15 and 12,205.20

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Solution

The fourth proportional to 18,110.10, 27,165.15 and 12,205.20 is: 18,307.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,110.10 : 27,165.15 = 12,205.20 : x
  2. Step 2: Convert to fraction form
    18,110.10/27,165.15 = 12,205.20/x
  3. Step 3: Cross multiply
    18,110.10x = 27,165.15 × 12,205.20
  4. Step 4: Simplify right side
    18,110.10x = 331,556,088.78
  5. Step 5: Solve for x
    x = 331,556,088.78/18,110.10
  6. Step 6: Final answer
    x = 18,307.80

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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.