Home / 20,761.58-28,650.61-11,808.89

Finding the Fourth Proportional to 20,761.58, 28,650.61 and 11,808.89

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Solution

The fourth proportional to 20,761.58, 28,650.61 and 11,808.89 is: 16,296.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,761.58 : 28,650.61 = 11,808.89 : x
  2. Step 2: Convert to fraction form
    20,761.58/28,650.61 = 11,808.89/x
  3. Step 3: Cross multiply
    20,761.58x = 28,650.61 × 11,808.89
  4. Step 4: Simplify right side
    20,761.58x = 338,331,880.87
  5. Step 5: Solve for x
    x = 338,331,880.87/20,761.58
  6. Step 6: Final answer
    x = 16,296.06

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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.