Home / 18,623.73-25,688-11,906.47

Finding the Fourth Proportional to 18,623.73, 25,688 and 11,906.47

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Solution

The fourth proportional to 18,623.73, 25,688 and 11,906.47 is: 16,422.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,623.73 : 25,688 = 11,906.47 : x
  2. Step 2: Convert to fraction form
    18,623.73/25,688 = 11,906.47/x
  3. Step 3: Cross multiply
    18,623.73x = 25,688 × 11,906.47
  4. Step 4: Simplify right side
    18,623.73x = 305,853,401.36
  5. Step 5: Solve for x
    x = 305,853,401.36/18,623.73
  6. Step 6: Final answer
    x = 16,422.78

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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.