Home / 18,431.77-25,441.29-15,940.66

Finding the Fourth Proportional to 18,431.77, 25,441.29 and 15,940.66

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Solution

The fourth proportional to 18,431.77, 25,441.29 and 15,940.66 is: 22,002.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.77 : 25,441.29 = 15,940.66 : x
  2. Step 2: Convert to fraction form
    18,431.77/25,441.29 = 15,940.66/x
  3. Step 3: Cross multiply
    18,431.77x = 25,441.29 × 15,940.66
  4. Step 4: Simplify right side
    18,431.77x = 405,550,953.85
  5. Step 5: Solve for x
    x = 405,550,953.85/18,431.77
  6. Step 6: Final answer
    x = 22,002.82

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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.