Home / 12,005.92-18,008.90-3,240.60

Finding the Fourth Proportional to 12,005.92, 18,008.90 and 3,240.60

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Solution

The fourth proportional to 12,005.92, 18,008.90 and 3,240.60 is: 4,860.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.92 : 18,008.90 = 3,240.60 : x
  2. Step 2: Convert to fraction form
    12,005.92/18,008.90 = 3,240.60/x
  3. Step 3: Cross multiply
    12,005.92x = 18,008.90 × 3,240.60
  4. Step 4: Simplify right side
    12,005.92x = 58,359,641.34
  5. Step 5: Solve for x
    x = 58,359,641.34/12,005.92
  6. Step 6: Final answer
    x = 4,860.91

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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.