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Finding the Fourth Proportional to 15,235.67, 21,027.17 and 8,521.67

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Solution

The fourth proportional to 15,235.67, 21,027.17 and 8,521.67 is: 11,760.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,235.67 : 21,027.17 = 8,521.67 : x
  2. Step 2: Convert to fraction form
    15,235.67/21,027.17 = 8,521.67/x
  3. Step 3: Cross multiply
    15,235.67x = 21,027.17 × 8,521.67
  4. Step 4: Simplify right side
    15,235.67x = 179,186,456.03
  5. Step 5: Solve for x
    x = 179,186,456.03/15,235.67
  6. Step 6: Final answer
    x = 11,760.99

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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.