Home / 13,812.45-20,718.86-3,951.73

Finding the Fourth Proportional to 13,812.45, 20,718.86 and 3,951.73

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Solution

The fourth proportional to 13,812.45, 20,718.86 and 3,951.73 is: 5,927.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,812.45 : 20,718.86 = 3,951.73 : x
  2. Step 2: Convert to fraction form
    13,812.45/20,718.86 = 3,951.73/x
  3. Step 3: Cross multiply
    13,812.45x = 20,718.86 × 3,951.73
  4. Step 4: Simplify right side
    13,812.45x = 81,875,365.54
  5. Step 5: Solve for x
    x = 81,875,365.54/13,812.45
  6. Step 6: Final answer
    x = 5,927.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.