Home / 20,784.85-31,166.33-14,212.91

Finding the Fourth Proportional to 20,784.85, 31,166.33 and 14,212.91

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Solution

The fourth proportional to 20,784.85, 31,166.33 and 14,212.91 is: 21,311.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.85 : 31,166.33 = 14,212.91 : x
  2. Step 2: Convert to fraction form
    20,784.85/31,166.33 = 14,212.91/x
  3. Step 3: Cross multiply
    20,784.85x = 31,166.33 × 14,212.91
  4. Step 4: Simplify right side
    20,784.85x = 442,964,243.32
  5. Step 5: Solve for x
    x = 442,964,243.32/20,784.85
  6. Step 6: Final answer
    x = 21,311.88

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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.