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Finding the Fourth Proportional to 15,472, 21,351.36 and 8,849.28

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Solution

The fourth proportional to 15,472, 21,351.36 and 8,849.28 is: 12,212.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472 : 21,351.36 = 8,849.28 : x
  2. Step 2: Convert to fraction form
    15,472/21,351.36 = 8,849.28/x
  3. Step 3: Cross multiply
    15,472x = 21,351.36 × 8,849.28
  4. Step 4: Simplify right side
    15,472x = 188,944,163.02
  5. Step 5: Solve for x
    x = 188,944,163.02/15,472
  6. Step 6: Final answer
    x = 12,212.01

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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.