Home / 21,230.82-31,846.28-5,648.45

Finding the Fourth Proportional to 21,230.82, 31,846.28 and 5,648.45

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Solution

The fourth proportional to 21,230.82, 31,846.28 and 5,648.45 is: 8,472.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,230.82 : 31,846.28 = 5,648.45 : x
  2. Step 2: Convert to fraction form
    21,230.82/31,846.28 = 5,648.45/x
  3. Step 3: Cross multiply
    21,230.82x = 31,846.28 × 5,648.45
  4. Step 4: Simplify right side
    21,230.82x = 179,881,975.16
  5. Step 5: Solve for x
    x = 179,881,975.16/21,230.82
  6. Step 6: Final answer
    x = 8,472.68

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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.