Home / 18,051.90-27,073.80-11,855.40

Finding the Fourth Proportional to 18,051.90, 27,073.80 and 11,855.40

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Solution

The fourth proportional to 18,051.90, 27,073.80 and 11,855.40 is: 17,780.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,051.90 : 27,073.80 = 11,855.40 : x
  2. Step 2: Convert to fraction form
    18,051.90/27,073.80 = 11,855.40/x
  3. Step 3: Cross multiply
    18,051.90x = 27,073.80 × 11,855.40
  4. Step 4: Simplify right side
    18,051.90x = 320,970,728.52
  5. Step 5: Solve for x
    x = 320,970,728.52/18,051.90
  6. Step 6: Final answer
    x = 17,780.44

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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.