Home / 12,199.60-18,299.40-8,045.20

Finding the Fourth Proportional to 12,199.60, 18,299.40 and 8,045.20

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Solution

The fourth proportional to 12,199.60, 18,299.40 and 8,045.20 is: 12,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,199.60 : 18,299.40 = 8,045.20 : x
  2. Step 2: Convert to fraction form
    12,199.60/18,299.40 = 8,045.20/x
  3. Step 3: Cross multiply
    12,199.60x = 18,299.40 × 8,045.20
  4. Step 4: Simplify right side
    12,199.60x = 147,222,332.88
  5. Step 5: Solve for x
    x = 147,222,332.88/12,199.60
  6. Step 6: Final answer
    x = 12,067.80

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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.