Home / 12,850.64-19,286.23-12,440.58

Finding the Fourth Proportional to 12,850.64, 19,286.23 and 12,440.58

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Solution

The fourth proportional to 12,850.64, 19,286.23 and 12,440.58 is: 18,670.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,850.64 : 19,286.23 = 12,440.58 : x
  2. Step 2: Convert to fraction form
    12,850.64/19,286.23 = 12,440.58/x
  3. Step 3: Cross multiply
    12,850.64x = 19,286.23 × 12,440.58
  4. Step 4: Simplify right side
    12,850.64x = 239,931,887.21
  5. Step 5: Solve for x
    x = 239,931,887.21/12,850.64
  6. Step 6: Final answer
    x = 18,670.81

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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.