Home / 20,792.34-28,694.61-12,834.70

Finding the Fourth Proportional to 20,792.34, 28,694.61 and 12,834.70

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Solution

The fourth proportional to 20,792.34, 28,694.61 and 12,834.70 is: 17,712.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.34 : 28,694.61 = 12,834.70 : x
  2. Step 2: Convert to fraction form
    20,792.34/28,694.61 = 12,834.70/x
  3. Step 3: Cross multiply
    20,792.34x = 28,694.61 × 12,834.70
  4. Step 4: Simplify right side
    20,792.34x = 368,286,639.23
  5. Step 5: Solve for x
    x = 368,286,639.23/20,792.34
  6. Step 6: Final answer
    x = 17,712.61

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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.