Home / 20,733.26-28,611.96-11,780.78

Finding the Fourth Proportional to 20,733.26, 28,611.96 and 11,780.78

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Solution

The fourth proportional to 20,733.26, 28,611.96 and 11,780.78 is: 16,257.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.26 : 28,611.96 = 11,780.78 : x
  2. Step 2: Convert to fraction form
    20,733.26/28,611.96 = 11,780.78/x
  3. Step 3: Cross multiply
    20,733.26x = 28,611.96 × 11,780.78
  4. Step 4: Simplify right side
    20,733.26x = 337,071,206.13
  5. Step 5: Solve for x
    x = 337,071,206.13/20,733.26
  6. Step 6: Final answer
    x = 16,257.51

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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.