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Finding the Fourth Proportional to 18,646.26, 27,978.78 and 11,624.46

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Solution

The fourth proportional to 18,646.26, 27,978.78 and 11,624.46 is: 17,442.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.26 : 27,978.78 = 11,624.46 : x
  2. Step 2: Convert to fraction form
    18,646.26/27,978.78 = 11,624.46/x
  3. Step 3: Cross multiply
    18,646.26x = 27,978.78 × 11,624.46
  4. Step 4: Simplify right side
    18,646.26x = 325,238,208.96
  5. Step 5: Solve for x
    x = 325,238,208.96/18,646.26
  6. Step 6: Final answer
    x = 17,442.54

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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.