Home / 20,763.69-28,650.96-11,811.98

Finding the Fourth Proportional to 20,763.69, 28,650.96 and 11,811.98

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Solution

The fourth proportional to 20,763.69, 28,650.96 and 11,811.98 is: 16,298.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.69 : 28,650.96 = 11,811.98 : x
  2. Step 2: Convert to fraction form
    20,763.69/28,650.96 = 11,811.98/x
  3. Step 3: Cross multiply
    20,763.69x = 28,650.96 × 11,811.98
  4. Step 4: Simplify right side
    20,763.69x = 338,424,423.25
  5. Step 5: Solve for x
    x = 338,424,423.25/20,763.69
  6. Step 6: Final answer
    x = 16,298.86

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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.