Home / 12,008.42-18,018.97-8,520.96

Finding the Fourth Proportional to 12,008.42, 18,018.97 and 8,520.96

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Solution

The fourth proportional to 12,008.42, 18,018.97 and 8,520.96 is: 12,785.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,008.42 : 18,018.97 = 8,520.96 : x
  2. Step 2: Convert to fraction form
    12,008.42/18,018.97 = 8,520.96/x
  3. Step 3: Cross multiply
    12,008.42x = 18,018.97 × 8,520.96
  4. Step 4: Simplify right side
    12,008.42x = 153,538,922.61
  5. Step 5: Solve for x
    x = 153,538,922.61/12,008.42
  6. Step 6: Final answer
    x = 12,785.94

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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.