Home / 20,390.56-30,550.40-11,037

Finding the Fourth Proportional to 20,390.56, 30,550.40 and 11,037

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Solution

The fourth proportional to 20,390.56, 30,550.40 and 11,037 is: 16,536.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,390.56 : 30,550.40 = 11,037 : x
  2. Step 2: Convert to fraction form
    20,390.56/30,550.40 = 11,037/x
  3. Step 3: Cross multiply
    20,390.56x = 30,550.40 × 11,037
  4. Step 4: Simplify right side
    20,390.56x = 337,184,764.80
  5. Step 5: Solve for x
    x = 337,184,764.80/20,390.56
  6. Step 6: Final answer
    x = 16,536.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.