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Finding the Fourth Proportional to 18,819.96, 25,960.14 and 12,446.52

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Solution

The fourth proportional to 18,819.96, 25,960.14 and 12,446.52 is: 17,168.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,819.96 : 25,960.14 = 12,446.52 : x
  2. Step 2: Convert to fraction form
    18,819.96/25,960.14 = 12,446.52/x
  3. Step 3: Cross multiply
    18,819.96x = 25,960.14 × 12,446.52
  4. Step 4: Simplify right side
    18,819.96x = 323,113,401.71
  5. Step 5: Solve for x
    x = 323,113,401.71/18,819.96
  6. Step 6: Final answer
    x = 17,168.66

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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.