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Finding the Fourth Proportional to 18,398.96, 27,609.28 and 6,712.88

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Solution

The fourth proportional to 18,398.96, 27,609.28 and 6,712.88 is: 10,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,398.96 : 27,609.28 = 6,712.88 : x
  2. Step 2: Convert to fraction form
    18,398.96/27,609.28 = 6,712.88/x
  3. Step 3: Cross multiply
    18,398.96x = 27,609.28 × 6,712.88
  4. Step 4: Simplify right side
    18,398.96x = 185,337,783.53
  5. Step 5: Solve for x
    x = 185,337,783.53/18,398.96
  6. Step 6: Final answer
    x = 10,073.27

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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.