Home / 20,536.81-28,341-12,043.96

Finding the Fourth Proportional to 20,536.81, 28,341 and 12,043.96

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Solution

The fourth proportional to 20,536.81, 28,341 and 12,043.96 is: 16,620.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.81 : 28,341 = 12,043.96 : x
  2. Step 2: Convert to fraction form
    20,536.81/28,341 = 12,043.96/x
  3. Step 3: Cross multiply
    20,536.81x = 28,341 × 12,043.96
  4. Step 4: Simplify right side
    20,536.81x = 341,337,799.51
  5. Step 5: Solve for x
    x = 341,337,799.51/20,536.81
  6. Step 6: Final answer
    x = 16,620.78

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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.