Home / 20,564.11-30,811.06-11,187.39

Finding the Fourth Proportional to 20,564.11, 30,811.06 and 11,187.39

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Solution

The fourth proportional to 20,564.11, 30,811.06 and 11,187.39 is: 16,761.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.11 : 30,811.06 = 11,187.39 : x
  2. Step 2: Convert to fraction form
    20,564.11/30,811.06 = 11,187.39/x
  3. Step 3: Cross multiply
    20,564.11x = 30,811.06 × 11,187.39
  4. Step 4: Simplify right side
    20,564.11x = 344,695,344.53
  5. Step 5: Solve for x
    x = 344,695,344.53/20,564.11
  6. Step 6: Final answer
    x = 16,761.99

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1.5x scale

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.