Home / 12,905.32-19,359.66-3,671.56

Finding the Fourth Proportional to 12,905.32, 19,359.66 and 3,671.56

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Solution

The fourth proportional to 12,905.32, 19,359.66 and 3,671.56 is: 5,507.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.32 : 19,359.66 = 3,671.56 : x
  2. Step 2: Convert to fraction form
    12,905.32/19,359.66 = 3,671.56/x
  3. Step 3: Cross multiply
    12,905.32x = 19,359.66 × 3,671.56
  4. Step 4: Simplify right side
    12,905.32x = 71,080,153.27
  5. Step 5: Solve for x
    x = 71,080,153.27/12,905.32
  6. Step 6: Final answer
    x = 5,507.82

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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.