Home / 20,732.68-28,611.78-11,779.84

Finding the Fourth Proportional to 20,732.68, 28,611.78 and 11,779.84

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Solution

The fourth proportional to 20,732.68, 28,611.78 and 11,779.84 is: 16,256.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732.68 : 28,611.78 = 11,779.84 : x
  2. Step 2: Convert to fraction form
    20,732.68/28,611.78 = 11,779.84/x
  3. Step 3: Cross multiply
    20,732.68x = 28,611.78 × 11,779.84
  4. Step 4: Simplify right side
    20,732.68x = 337,042,190.52
  5. Step 5: Solve for x
    x = 337,042,190.52/20,732.68
  6. Step 6: Final answer
    x = 16,256.57

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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.