Home / 18,031.80-27,023.40-12,091.80

Finding the Fourth Proportional to 18,031.80, 27,023.40 and 12,091.80

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Solution

The fourth proportional to 18,031.80, 27,023.40 and 12,091.80 is: 18,121.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.80 : 27,023.40 = 12,091.80 : x
  2. Step 2: Convert to fraction form
    18,031.80/27,023.40 = 12,091.80/x
  3. Step 3: Cross multiply
    18,031.80x = 27,023.40 × 12,091.80
  4. Step 4: Simplify right side
    18,031.80x = 326,761,548.12
  5. Step 5: Solve for x
    x = 326,761,548.12/18,031.80
  6. Step 6: Final answer
    x = 18,121.40

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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.