Home / 12,027.80-18,041.70-8,091.20

Finding the Fourth Proportional to 12,027.80, 18,041.70 and 8,091.20

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Solution

The fourth proportional to 12,027.80, 18,041.70 and 8,091.20 is: 12,136.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,027.80 : 18,041.70 = 8,091.20 : x
  2. Step 2: Convert to fraction form
    12,027.80/18,041.70 = 8,091.20/x
  3. Step 3: Cross multiply
    12,027.80x = 18,041.70 × 8,091.20
  4. Step 4: Simplify right side
    12,027.80x = 145,979,003.04
  5. Step 5: Solve for x
    x = 145,979,003.04/12,027.80
  6. Step 6: Final answer
    x = 12,136.80

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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.