Home / 18,447.36-27,679.68-11,518.08

Finding the Fourth Proportional to 18,447.36, 27,679.68 and 11,518.08

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Solution

The fourth proportional to 18,447.36, 27,679.68 and 11,518.08 is: 17,282.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,447.36 : 27,679.68 = 11,518.08 : x
  2. Step 2: Convert to fraction form
    18,447.36/27,679.68 = 11,518.08/x
  3. Step 3: Cross multiply
    18,447.36x = 27,679.68 × 11,518.08
  4. Step 4: Simplify right side
    18,447.36x = 318,816,768.61
  5. Step 5: Solve for x
    x = 318,816,768.61/18,447.36
  6. Step 6: Final answer
    x = 17,282.51

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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.