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Finding the Fourth Proportional to 15,227.70, 20,995.20 and 11,647.14

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Solution

The fourth proportional to 15,227.70, 20,995.20 and 11,647.14 is: 16,058.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,227.70 : 20,995.20 = 11,647.14 : x
  2. Step 2: Convert to fraction form
    15,227.70/20,995.20 = 11,647.14/x
  3. Step 3: Cross multiply
    15,227.70x = 20,995.20 × 11,647.14
  4. Step 4: Simplify right side
    15,227.70x = 244,534,033.73
  5. Step 5: Solve for x
    x = 244,534,033.73/15,227.70
  6. Step 6: Final answer
    x = 16,058.50

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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.