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Finding the Fourth Proportional to 18,668.16, 25,774.72 and 13,069.44

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Solution

The fourth proportional to 18,668.16, 25,774.72 and 13,069.44 is: 18,044.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.16 : 25,774.72 = 13,069.44 : x
  2. Step 2: Convert to fraction form
    18,668.16/25,774.72 = 13,069.44/x
  3. Step 3: Cross multiply
    18,668.16x = 25,774.72 × 13,069.44
  4. Step 4: Simplify right side
    18,668.16x = 336,861,156.56
  5. Step 5: Solve for x
    x = 336,861,156.56/18,668.16
  6. Step 6: Final answer
    x = 18,044.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.