Home / 12,406.12-18,607.26-3,640.12

Finding the Fourth Proportional to 12,406.12, 18,607.26 and 3,640.12

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Solution

The fourth proportional to 12,406.12, 18,607.26 and 3,640.12 is: 5,459.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.12 : 18,607.26 = 3,640.12 : x
  2. Step 2: Convert to fraction form
    12,406.12/18,607.26 = 3,640.12/x
  3. Step 3: Cross multiply
    12,406.12x = 18,607.26 × 3,640.12
  4. Step 4: Simplify right side
    12,406.12x = 67,732,659.27
  5. Step 5: Solve for x
    x = 67,732,659.27/12,406.12
  6. Step 6: Final answer
    x = 5,459.62

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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.