Home / 20,792.70-28,694.20-11,840.24

Finding the Fourth Proportional to 20,792.70, 28,694.20 and 11,840.24

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Solution

The fourth proportional to 20,792.70, 28,694.20 and 11,840.24 is: 16,339.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.70 : 28,694.20 = 11,840.24 : x
  2. Step 2: Convert to fraction form
    20,792.70/28,694.20 = 11,840.24/x
  3. Step 3: Cross multiply
    20,792.70x = 28,694.20 × 11,840.24
  4. Step 4: Simplify right side
    20,792.70x = 339,746,214.61
  5. Step 5: Solve for x
    x = 339,746,214.61/20,792.70
  6. Step 6: Final answer
    x = 16,339.69

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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.