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Finding the Fourth Proportional to 18,264.36, 27,401.94 and 7,728.96

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Solution

The fourth proportional to 18,264.36, 27,401.94 and 7,728.96 is: 11,595.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,264.36 : 27,401.94 = 7,728.96 : x
  2. Step 2: Convert to fraction form
    18,264.36/27,401.94 = 7,728.96/x
  3. Step 3: Cross multiply
    18,264.36x = 27,401.94 × 7,728.96
  4. Step 4: Simplify right side
    18,264.36x = 211,788,498.18
  5. Step 5: Solve for x
    x = 211,788,498.18/18,264.36
  6. Step 6: Final answer
    x = 11,595.73

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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.