Home / 13,519.18-18,520.96-13,013.79

Finding the Fourth Proportional to 13,519.18, 18,520.96 and 13,013.79

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Solution

The fourth proportional to 13,519.18, 18,520.96 and 13,013.79 is: 17,828.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.18 : 18,520.96 = 13,013.79 : x
  2. Step 2: Convert to fraction form
    13,519.18/18,520.96 = 13,013.79/x
  3. Step 3: Cross multiply
    13,519.18x = 18,520.96 × 13,013.79
  4. Step 4: Simplify right side
    13,519.18x = 241,027,726.36
  5. Step 5: Solve for x
    x = 241,027,726.36/13,519.18
  6. Step 6: Final answer
    x = 17,828.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.