Home / 31,020.75-46,546.50-12,300.38

Finding the Fourth Proportional to 31,020.75, 46,546.50 and 12,300.38

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Solution

The fourth proportional to 31,020.75, 46,546.50 and 12,300.38 is: 18,456.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,020.75 : 46,546.50 = 12,300.38 : x
  2. Step 2: Convert to fraction form
    31,020.75/46,546.50 = 12,300.38/x
  3. Step 3: Cross multiply
    31,020.75x = 46,546.50 × 12,300.38
  4. Step 4: Simplify right side
    31,020.75x = 572,539,687.34
  5. Step 5: Solve for x
    x = 572,539,687.34/31,020.75
  6. Step 6: Final answer
    x = 18,456.67

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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.