Home / 20,750.14-31,125.33-5,167.77

Finding the Fourth Proportional to 20,750.14, 31,125.33 and 5,167.77

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Solution

The fourth proportional to 20,750.14, 31,125.33 and 5,167.77 is: 7,751.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,750.14 : 31,125.33 = 5,167.77 : x
  2. Step 2: Convert to fraction form
    20,750.14/31,125.33 = 5,167.77/x
  3. Step 3: Cross multiply
    20,750.14x = 31,125.33 × 5,167.77
  4. Step 4: Simplify right side
    20,750.14x = 160,848,429.89
  5. Step 5: Solve for x
    x = 160,848,429.89/20,750.14
  6. Step 6: Final answer
    x = 7,751.68

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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.