Home / 21,144.72-31,717.32-5,563.92

Finding the Fourth Proportional to 21,144.72, 31,717.32 and 5,563.92

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Solution

The fourth proportional to 21,144.72, 31,717.32 and 5,563.92 is: 8,345.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.72 : 31,717.32 = 5,563.92 : x
  2. Step 2: Convert to fraction form
    21,144.72/31,717.32 = 5,563.92/x
  3. Step 3: Cross multiply
    21,144.72x = 31,717.32 × 5,563.92
  4. Step 4: Simplify right side
    21,144.72x = 176,472,631.09
  5. Step 5: Solve for x
    x = 176,472,631.09/21,144.72
  6. Step 6: Final answer
    x = 8,345.94

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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.