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Finding the Fourth Proportional to 18,354.72, 27,538.32 and 6,668.88

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Solution

The fourth proportional to 18,354.72, 27,538.32 and 6,668.88 is: 10,005.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,354.72 : 27,538.32 = 6,668.88 : x
  2. Step 2: Convert to fraction form
    18,354.72/27,538.32 = 6,668.88/x
  3. Step 3: Cross multiply
    18,354.72x = 27,538.32 × 6,668.88
  4. Step 4: Simplify right side
    18,354.72x = 183,649,751.48
  5. Step 5: Solve for x
    x = 183,649,751.48/18,354.72
  6. Step 6: Final answer
    x = 10,005.59

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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.