Home / 13,416.03-18,519.09-11,519.99

Finding the Fourth Proportional to 13,416.03, 18,519.09 and 11,519.99

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Solution

The fourth proportional to 13,416.03, 18,519.09 and 11,519.99 is: 15,901.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,416.03 : 18,519.09 = 11,519.99 : x
  2. Step 2: Convert to fraction form
    13,416.03/18,519.09 = 11,519.99/x
  3. Step 3: Cross multiply
    13,416.03x = 18,519.09 × 11,519.99
  4. Step 4: Simplify right side
    13,416.03x = 213,339,731.61
  5. Step 5: Solve for x
    x = 213,339,731.61/13,416.03
  6. Step 6: Final answer
    x = 15,901.85

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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.