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Finding the Fourth Proportional to 18,313.42, 27,470.12 and 17,378.48

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Solution

The fourth proportional to 18,313.42, 27,470.12 and 17,378.48 is: 26,067.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,313.42 : 27,470.12 = 17,378.48 : x
  2. Step 2: Convert to fraction form
    18,313.42/27,470.12 = 17,378.48/x
  3. Step 3: Cross multiply
    18,313.42x = 27,470.12 × 17,378.48
  4. Step 4: Simplify right side
    18,313.42x = 477,388,931.02
  5. Step 5: Solve for x
    x = 477,388,931.02/18,313.42
  6. Step 6: Final answer
    x = 26,067.71

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Double scale
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Similar ratio
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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.