Home / 18,819.95-25,964.75-13,163.72

Finding the Fourth Proportional to 18,819.95, 25,964.75 and 13,163.72

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Solution

The fourth proportional to 18,819.95, 25,964.75 and 13,163.72 is: 18,161.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.95 : 25,964.75 = 13,163.72 : x
  2. Step 2: Convert to fraction form
    18,819.95/25,964.75 = 13,163.72/x
  3. Step 3: Cross multiply
    18,819.95x = 25,964.75 × 13,163.72
  4. Step 4: Simplify right side
    18,819.95x = 341,792,601.96
  5. Step 5: Solve for x
    x = 341,792,601.96/18,819.95
  6. Step 6: Final answer
    x = 18,161.19

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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.