Home / 20,764.62-31,152.87-10,237.77

Finding the Fourth Proportional to 20,764.62, 31,152.87 and 10,237.77

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Solution

The fourth proportional to 20,764.62, 31,152.87 and 10,237.77 is: 15,359.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.62 : 31,152.87 = 10,237.77 : x
  2. Step 2: Convert to fraction form
    20,764.62/31,152.87 = 10,237.77/x
  3. Step 3: Cross multiply
    20,764.62x = 31,152.87 × 10,237.77
  4. Step 4: Simplify right side
    20,764.62x = 318,935,917.90
  5. Step 5: Solve for x
    x = 318,935,917.90/20,764.62
  6. Step 6: Final answer
    x = 15,359.58

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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.