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Finding the Fourth Proportional to 18,179.55, 27,289.58 and 9,412.11

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Solution

The fourth proportional to 18,179.55, 27,289.58 and 9,412.11 is: 14,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,179.55 : 27,289.58 = 9,412.11 : x
  2. Step 2: Convert to fraction form
    18,179.55/27,289.58 = 9,412.11/x
  3. Step 3: Cross multiply
    18,179.55x = 27,289.58 × 9,412.11
  4. Step 4: Simplify right side
    18,179.55x = 256,852,481.75
  5. Step 5: Solve for x
    x = 256,852,481.75/18,179.55
  6. Step 6: Final answer
    x = 14,128.65

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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.