Home / 20,732.88-28,611.38-11,780.39

Finding the Fourth Proportional to 20,732.88, 28,611.38 and 11,780.39

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Solution

The fourth proportional to 20,732.88, 28,611.38 and 11,780.39 is: 16,256.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.88 : 28,611.38 = 11,780.39 : x
  2. Step 2: Convert to fraction form
    20,732.88/28,611.38 = 11,780.39/x
  3. Step 3: Cross multiply
    20,732.88x = 28,611.38 × 11,780.39
  4. Step 4: Simplify right side
    20,732.88x = 337,053,214.84
  5. Step 5: Solve for x
    x = 337,053,214.84/20,732.88
  6. Step 6: Final answer
    x = 16,256.94

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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.