Home / 12,099.21-16,688.39-11,107.77

Finding the Fourth Proportional to 12,099.21, 16,688.39 and 11,107.77

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Solution

The fourth proportional to 12,099.21, 16,688.39 and 11,107.77 is: 15,320.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,099.21 : 16,688.39 = 11,107.77 : x
  2. Step 2: Convert to fraction form
    12,099.21/16,688.39 = 11,107.77/x
  3. Step 3: Cross multiply
    12,099.21x = 16,688.39 × 11,107.77
  4. Step 4: Simplify right side
    12,099.21x = 185,370,742.25
  5. Step 5: Solve for x
    x = 185,370,742.25/12,099.21
  6. Step 6: Final answer
    x = 15,320.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.