Home / 20,886.18-31,344.33-8,237.82

Finding the Fourth Proportional to 20,886.18, 31,344.33 and 8,237.82

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Solution

The fourth proportional to 20,886.18, 31,344.33 and 8,237.82 is: 12,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,886.18 : 31,344.33 = 8,237.82 : x
  2. Step 2: Convert to fraction form
    20,886.18/31,344.33 = 8,237.82/x
  3. Step 3: Cross multiply
    20,886.18x = 31,344.33 × 8,237.82
  4. Step 4: Simplify right side
    20,886.18x = 258,208,948.56
  5. Step 5: Solve for x
    x = 258,208,948.56/20,886.18
  6. Step 6: Final answer
    x = 12,362.67

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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.