Home / 12,005.45-18,008.38-4,214.46

Finding the Fourth Proportional to 12,005.45, 18,008.38 and 4,214.46

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Solution

The fourth proportional to 12,005.45, 18,008.38 and 4,214.46 is: 6,321.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.45 : 18,008.38 = 4,214.46 : x
  2. Step 2: Convert to fraction form
    12,005.45/18,008.38 = 4,214.46/x
  3. Step 3: Cross multiply
    12,005.45x = 18,008.38 × 4,214.46
  4. Step 4: Simplify right side
    12,005.45x = 75,895,646.27
  5. Step 5: Solve for x
    x = 75,895,646.27/12,005.45
  6. Step 6: Final answer
    x = 6,321.77

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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.