Home / 20,555.98-28,367.92-12,596.66

Finding the Fourth Proportional to 20,555.98, 28,367.92 and 12,596.66

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Solution

The fourth proportional to 20,555.98, 28,367.92 and 12,596.66 is: 17,383.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,555.98 : 28,367.92 = 12,596.66 : x
  2. Step 2: Convert to fraction form
    20,555.98/28,367.92 = 12,596.66/x
  3. Step 3: Cross multiply
    20,555.98x = 28,367.92 × 12,596.66
  4. Step 4: Simplify right side
    20,555.98x = 357,341,183.00
  5. Step 5: Solve for x
    x = 357,341,183.00/20,555.98
  6. Step 6: Final answer
    x = 17,383.81

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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.