Home / 20,694.66-28,541.88-12,722.64

Finding the Fourth Proportional to 20,694.66, 28,541.88 and 12,722.64

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Solution

The fourth proportional to 20,694.66, 28,541.88 and 12,722.64 is: 17,546.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.66 : 28,541.88 = 12,722.64 : x
  2. Step 2: Convert to fraction form
    20,694.66/28,541.88 = 12,722.64/x
  3. Step 3: Cross multiply
    20,694.66x = 28,541.88 × 12,722.64
  4. Step 4: Simplify right side
    20,694.66x = 363,128,064.16
  5. Step 5: Solve for x
    x = 363,128,064.16/20,694.66
  6. Step 6: Final answer
    x = 17,546.95

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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.