Home / 18,940.46-28,410.75-5,792.78

Finding the Fourth Proportional to 18,940.46, 28,410.75 and 5,792.78

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Solution

The fourth proportional to 18,940.46, 28,410.75 and 5,792.78 is: 8,689.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.46 : 28,410.75 = 5,792.78 : x
  2. Step 2: Convert to fraction form
    18,940.46/28,410.75 = 5,792.78/x
  3. Step 3: Cross multiply
    18,940.46x = 28,410.75 × 5,792.78
  4. Step 4: Simplify right side
    18,940.46x = 164,577,295.41
  5. Step 5: Solve for x
    x = 164,577,295.41/18,940.46
  6. Step 6: Final answer
    x = 8,689.19

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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.