Home / 13,520.18-18,636.68-12,433.97

Finding the Fourth Proportional to 13,520.18, 18,636.68 and 12,433.97

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Solution

The fourth proportional to 13,520.18, 18,636.68 and 12,433.97 is: 17,139.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.18 : 18,636.68 = 12,433.97 : x
  2. Step 2: Convert to fraction form
    13,520.18/18,636.68 = 12,433.97/x
  3. Step 3: Cross multiply
    13,520.18x = 18,636.68 × 12,433.97
  4. Step 4: Simplify right side
    13,520.18x = 231,727,997.70
  5. Step 5: Solve for x
    x = 231,727,997.70/13,520.18
  6. Step 6: Final answer
    x = 17,139.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.