Home / 12,628.62-17,428.77-8,662.86

Finding the Fourth Proportional to 12,628.62, 17,428.77 and 8,662.86

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Solution

The fourth proportional to 12,628.62, 17,428.77 and 8,662.86 is: 11,955.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.62 : 17,428.77 = 8,662.86 : x
  2. Step 2: Convert to fraction form
    12,628.62/17,428.77 = 8,662.86/x
  3. Step 3: Cross multiply
    12,628.62x = 17,428.77 × 8,662.86
  4. Step 4: Simplify right side
    12,628.62x = 150,982,994.48
  5. Step 5: Solve for x
    x = 150,982,994.48/12,628.62
  6. Step 6: Final answer
    x = 11,955.62

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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.