Home / 12,638.32-18,942.08-8,941.61

Finding the Fourth Proportional to 12,638.32, 18,942.08 and 8,941.61

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Solution

The fourth proportional to 12,638.32, 18,942.08 and 8,941.61 is: 13,401.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,638.32 : 18,942.08 = 8,941.61 : x
  2. Step 2: Convert to fraction form
    12,638.32/18,942.08 = 8,941.61/x
  3. Step 3: Cross multiply
    12,638.32x = 18,942.08 × 8,941.61
  4. Step 4: Simplify right side
    12,638.32x = 169,372,694.60
  5. Step 5: Solve for x
    x = 169,372,694.60/12,638.32
  6. Step 6: Final answer
    x = 13,401.52

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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.