Home / 12,346.43-18,519.84-8,654.45

Finding the Fourth Proportional to 12,346.43, 18,519.84 and 8,654.45

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Solution

The fourth proportional to 12,346.43, 18,519.84 and 8,654.45 is: 12,981.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,346.43 : 18,519.84 = 8,654.45 : x
  2. Step 2: Convert to fraction form
    12,346.43/18,519.84 = 8,654.45/x
  3. Step 3: Cross multiply
    12,346.43x = 18,519.84 × 8,654.45
  4. Step 4: Simplify right side
    12,346.43x = 160,278,936.69
  5. Step 5: Solve for x
    x = 160,278,936.69/12,346.43
  6. Step 6: Final answer
    x = 12,981.81

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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.