Home / 13,785.12-19,025.01-12,940.56

Finding the Fourth Proportional to 13,785.12, 19,025.01 and 12,940.56

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Solution

The fourth proportional to 13,785.12, 19,025.01 and 12,940.56 is: 17,859.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,785.12 : 19,025.01 = 12,940.56 : x
  2. Step 2: Convert to fraction form
    13,785.12/19,025.01 = 12,940.56/x
  3. Step 3: Cross multiply
    13,785.12x = 19,025.01 × 12,940.56
  4. Step 4: Simplify right side
    13,785.12x = 246,194,283.41
  5. Step 5: Solve for x
    x = 246,194,283.41/13,785.12
  6. Step 6: Final answer
    x = 17,859.42

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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.