Home / 31,789.44-47,665.68-21,271.48

Finding the Fourth Proportional to 31,789.44, 47,665.68 and 21,271.48

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Solution

The fourth proportional to 31,789.44, 47,665.68 and 21,271.48 is: 31,894.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.44 : 47,665.68 = 21,271.48 : x
  2. Step 2: Convert to fraction form
    31,789.44/47,665.68 = 21,271.48/x
  3. Step 3: Cross multiply
    31,789.44x = 47,665.68 × 21,271.48
  4. Step 4: Simplify right side
    31,789.44x = 1,013,919,558.81
  5. Step 5: Solve for x
    x = 1,013,919,558.81/31,789.44
  6. Step 6: Final answer
    x = 31,894.85

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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.