Home / 13,925.21-19,221.39-12,448.99

Finding the Fourth Proportional to 13,925.21, 19,221.39 and 12,448.99

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Solution

The fourth proportional to 13,925.21, 19,221.39 and 12,448.99 is: 17,183.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,925.21 : 19,221.39 = 12,448.99 : x
  2. Step 2: Convert to fraction form
    13,925.21/19,221.39 = 12,448.99/x
  3. Step 3: Cross multiply
    13,925.21x = 19,221.39 × 12,448.99
  4. Step 4: Simplify right side
    13,925.21x = 239,286,733.54
  5. Step 5: Solve for x
    x = 239,286,733.54/13,925.21
  6. Step 6: Final answer
    x = 17,183.71

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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.