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Finding the Fourth Proportional to 18,668.66, 25,764.62 and 10,713.38

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Solution

The fourth proportional to 18,668.66, 25,764.62 and 10,713.38 is: 14,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,668.66 : 25,764.62 = 10,713.38 : x
  2. Step 2: Convert to fraction form
    18,668.66/25,764.62 = 10,713.38/x
  3. Step 3: Cross multiply
    18,668.66x = 25,764.62 × 10,713.38
  4. Step 4: Simplify right side
    18,668.66x = 276,025,982.23
  5. Step 5: Solve for x
    x = 276,025,982.23/18,668.66
  6. Step 6: Final answer
    x = 14,785.53

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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.