Home / 20,365.10-28,103.37-11,866.68

Finding the Fourth Proportional to 20,365.10, 28,103.37 and 11,866.68

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Solution

The fourth proportional to 20,365.10, 28,103.37 and 11,866.68 is: 16,375.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.10 : 28,103.37 = 11,866.68 : x
  2. Step 2: Convert to fraction form
    20,365.10/28,103.37 = 11,866.68/x
  3. Step 3: Cross multiply
    20,365.10x = 28,103.37 × 11,866.68
  4. Step 4: Simplify right side
    20,365.10x = 333,493,654.21
  5. Step 5: Solve for x
    x = 333,493,654.21/20,365.10
  6. Step 6: Final answer
    x = 16,375.74

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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.