Home / 13,215.88-19,843.26-5,439.88

Finding the Fourth Proportional to 13,215.88, 19,843.26 and 5,439.88

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Solution

The fourth proportional to 13,215.88, 19,843.26 and 5,439.88 is: 8,167.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215.88 : 19,843.26 = 5,439.88 : x
  2. Step 2: Convert to fraction form
    13,215.88/19,843.26 = 5,439.88/x
  3. Step 3: Cross multiply
    13,215.88x = 19,843.26 × 5,439.88
  4. Step 4: Simplify right side
    13,215.88x = 107,944,953.21
  5. Step 5: Solve for x
    x = 107,944,953.21/13,215.88
  6. Step 6: Final answer
    x = 8,167.82

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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.