Home / 21,167.72-31,749.14-5,586.56

Finding the Fourth Proportional to 21,167.72, 31,749.14 and 5,586.56

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Solution

The fourth proportional to 21,167.72, 31,749.14 and 5,586.56 is: 8,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.72 : 31,749.14 = 5,586.56 : x
  2. Step 2: Convert to fraction form
    21,167.72/31,749.14 = 5,586.56/x
  3. Step 3: Cross multiply
    21,167.72x = 31,749.14 × 5,586.56
  4. Step 4: Simplify right side
    21,167.72x = 177,368,475.56
  5. Step 5: Solve for x
    x = 177,368,475.56/21,167.72
  6. Step 6: Final answer
    x = 8,379.20

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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.