Home / 18,090.90-27,132.30-11,894.40

Finding the Fourth Proportional to 18,090.90, 27,132.30 and 11,894.40

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Solution

The fourth proportional to 18,090.90, 27,132.30 and 11,894.40 is: 17,838.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,090.90 : 27,132.30 = 11,894.40 : x
  2. Step 2: Convert to fraction form
    18,090.90/27,132.30 = 11,894.40/x
  3. Step 3: Cross multiply
    18,090.90x = 27,132.30 × 11,894.40
  4. Step 4: Simplify right side
    18,090.90x = 322,722,429.12
  5. Step 5: Solve for x
    x = 322,722,429.12/18,090.90
  6. Step 6: Final answer
    x = 17,838.94

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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.