Home / 13,518.27-20,249.13-10,871.45

Finding the Fourth Proportional to 13,518.27, 20,249.13 and 10,871.45

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Solution

The fourth proportional to 13,518.27, 20,249.13 and 10,871.45 is: 16,284.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.27 : 20,249.13 = 10,871.45 : x
  2. Step 2: Convert to fraction form
    13,518.27/20,249.13 = 10,871.45/x
  3. Step 3: Cross multiply
    13,518.27x = 20,249.13 × 10,871.45
  4. Step 4: Simplify right side
    13,518.27x = 220,137,404.34
  5. Step 5: Solve for x
    x = 220,137,404.34/13,518.27
  6. Step 6: Final answer
    x = 16,284.44

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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.