Home / 12,036.40-18,054.60-8,099.80

Finding the Fourth Proportional to 12,036.40, 18,054.60 and 8,099.80

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Solution

The fourth proportional to 12,036.40, 18,054.60 and 8,099.80 is: 12,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,036.40 : 18,054.60 = 8,099.80 : x
  2. Step 2: Convert to fraction form
    12,036.40/18,054.60 = 8,099.80/x
  3. Step 3: Cross multiply
    12,036.40x = 18,054.60 × 8,099.80
  4. Step 4: Simplify right side
    12,036.40x = 146,238,649.08
  5. Step 5: Solve for x
    x = 146,238,649.08/12,036.40
  6. Step 6: Final answer
    x = 12,149.70

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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.