Home / 12,005.16-18,008.42-3,240.77

Finding the Fourth Proportional to 12,005.16, 18,008.42 and 3,240.77

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Solution

The fourth proportional to 12,005.16, 18,008.42 and 3,240.77 is: 4,861.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,005.16 : 18,008.42 = 3,240.77 : x
  2. Step 2: Convert to fraction form
    12,005.16/18,008.42 = 3,240.77/x
  3. Step 3: Cross multiply
    12,005.16x = 18,008.42 × 3,240.77
  4. Step 4: Simplify right side
    12,005.16x = 58,361,041.04
  5. Step 5: Solve for x
    x = 58,361,041.04/12,005.16
  6. Step 6: Final answer
    x = 4,861.33

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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.