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Finding the Fourth Proportional to 18,494.76, 25,502.70 and 11,771.79

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Solution

The fourth proportional to 18,494.76, 25,502.70 and 11,771.79 is: 16,232.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,494.76 : 25,502.70 = 11,771.79 : x
  2. Step 2: Convert to fraction form
    18,494.76/25,502.70 = 11,771.79/x
  3. Step 3: Cross multiply
    18,494.76x = 25,502.70 × 11,771.79
  4. Step 4: Simplify right side
    18,494.76x = 300,212,428.83
  5. Step 5: Solve for x
    x = 300,212,428.83/18,494.76
  6. Step 6: Final answer
    x = 16,232.30

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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.