Home / 21,167.84-31,749.33-5,586.68

Finding the Fourth Proportional to 21,167.84, 31,749.33 and 5,586.68

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Solution

The fourth proportional to 21,167.84, 31,749.33 and 5,586.68 is: 8,379.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.84 : 31,749.33 = 5,586.68 : x
  2. Step 2: Convert to fraction form
    21,167.84/31,749.33 = 5,586.68/x
  3. Step 3: Cross multiply
    21,167.84x = 31,749.33 × 5,586.68
  4. Step 4: Simplify right side
    21,167.84x = 177,373,346.92
  5. Step 5: Solve for x
    x = 177,373,346.92/21,167.84
  6. Step 6: Final answer
    x = 8,379.38

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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.