Home / 20,802.91-28,704.69-11,850.58

Finding the Fourth Proportional to 20,802.91, 28,704.69 and 11,850.58

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Solution

The fourth proportional to 20,802.91, 28,704.69 and 11,850.58 is: 16,351.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.91 : 28,704.69 = 11,850.58 : x
  2. Step 2: Convert to fraction form
    20,802.91/28,704.69 = 11,850.58/x
  3. Step 3: Cross multiply
    20,802.91x = 28,704.69 × 11,850.58
  4. Step 4: Simplify right side
    20,802.91x = 340,167,225.22
  5. Step 5: Solve for x
    x = 340,167,225.22/20,802.91
  6. Step 6: Final answer
    x = 16,351.91

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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.