Home / 21,160.86-31,743.40-7,837.44

Finding the Fourth Proportional to 21,160.86, 31,743.40 and 7,837.44

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Solution

The fourth proportional to 21,160.86, 31,743.40 and 7,837.44 is: 11,756.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.86 : 31,743.40 = 7,837.44 : x
  2. Step 2: Convert to fraction form
    21,160.86/31,743.40 = 7,837.44/x
  3. Step 3: Cross multiply
    21,160.86x = 31,743.40 × 7,837.44
  4. Step 4: Simplify right side
    21,160.86x = 248,786,992.90
  5. Step 5: Solve for x
    x = 248,786,992.90/21,160.86
  6. Step 6: Final answer
    x = 11,756.94

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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.