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Finding the Fourth Proportional to 18,811.72, 25,960.25 and 10,313.97

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Solution

The fourth proportional to 18,811.72, 25,960.25 and 10,313.97 is: 14,233.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.72 : 25,960.25 = 10,313.97 : x
  2. Step 2: Convert to fraction form
    18,811.72/25,960.25 = 10,313.97/x
  3. Step 3: Cross multiply
    18,811.72x = 25,960.25 × 10,313.97
  4. Step 4: Simplify right side
    18,811.72x = 267,753,334.40
  5. Step 5: Solve for x
    x = 267,753,334.40/18,811.72
  6. Step 6: Final answer
    x = 14,233.32

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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.