Home / 18,081.90-27,118.80-11,885.40

Finding the Fourth Proportional to 18,081.90, 27,118.80 and 11,885.40

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Solution

The fourth proportional to 18,081.90, 27,118.80 and 11,885.40 is: 17,825.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,081.90 : 27,118.80 = 11,885.40 : x
  2. Step 2: Convert to fraction form
    18,081.90/27,118.80 = 11,885.40/x
  3. Step 3: Cross multiply
    18,081.90x = 27,118.80 × 11,885.40
  4. Step 4: Simplify right side
    18,081.90x = 322,317,785.52
  5. Step 5: Solve for x
    x = 322,317,785.52/18,081.90
  6. Step 6: Final answer
    x = 17,825.44

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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.