Home / 13,421.81-20,099.77-11,067.41

Finding the Fourth Proportional to 13,421.81, 20,099.77 and 11,067.41

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Solution

The fourth proportional to 13,421.81, 20,099.77 and 11,067.41 is: 16,573.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,421.81 : 20,099.77 = 11,067.41 : x
  2. Step 2: Convert to fraction form
    13,421.81/20,099.77 = 11,067.41/x
  3. Step 3: Cross multiply
    13,421.81x = 20,099.77 × 11,067.41
  4. Step 4: Simplify right side
    13,421.81x = 222,452,395.50
  5. Step 5: Solve for x
    x = 222,452,395.50/13,421.81
  6. Step 6: Final answer
    x = 16,573.95

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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.