Home / 18,771.75-25,906.64-10,389.87

Finding the Fourth Proportional to 18,771.75, 25,906.64 and 10,389.87

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Solution

The fourth proportional to 18,771.75, 25,906.64 and 10,389.87 is: 14,338.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.75 : 25,906.64 = 10,389.87 : x
  2. Step 2: Convert to fraction form
    18,771.75/25,906.64 = 10,389.87/x
  3. Step 3: Cross multiply
    18,771.75x = 25,906.64 × 10,389.87
  4. Step 4: Simplify right side
    18,771.75x = 269,166,569.79
  5. Step 5: Solve for x
    x = 269,166,569.79/18,771.75
  6. Step 6: Final answer
    x = 14,338.92

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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.