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Finding the Fourth Proportional to 18,236.70, 27,351.63 and 7,703.28

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Solution

The fourth proportional to 18,236.70, 27,351.63 and 7,703.28 is: 11,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,236.70 : 27,351.63 = 7,703.28 : x
  2. Step 2: Convert to fraction form
    18,236.70/27,351.63 = 7,703.28/x
  3. Step 3: Cross multiply
    18,236.70x = 27,351.63 × 7,703.28
  4. Step 4: Simplify right side
    18,236.70x = 210,697,264.35
  5. Step 5: Solve for x
    x = 210,697,264.35/18,236.70
  6. Step 6: Final answer
    x = 11,553.48

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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.