Home / 20,302.42-30,511.04-11,986.36

Finding the Fourth Proportional to 20,302.42, 30,511.04 and 11,986.36

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Solution

The fourth proportional to 20,302.42, 30,511.04 and 11,986.36 is: 18,013.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,302.42 : 30,511.04 = 11,986.36 : x
  2. Step 2: Convert to fraction form
    20,302.42/30,511.04 = 11,986.36/x
  3. Step 3: Cross multiply
    20,302.42x = 30,511.04 × 11,986.36
  4. Step 4: Simplify right side
    20,302.42x = 365,716,309.41
  5. Step 5: Solve for x
    x = 365,716,309.41/20,302.42
  6. Step 6: Final answer
    x = 18,013.43

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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.