Home / 21,192.44-31,789.73-7,152.98

Finding the Fourth Proportional to 21,192.44, 31,789.73 and 7,152.98

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Solution

The fourth proportional to 21,192.44, 31,789.73 and 7,152.98 is: 10,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.44 : 31,789.73 = 7,152.98 : x
  2. Step 2: Convert to fraction form
    21,192.44/31,789.73 = 7,152.98/x
  3. Step 3: Cross multiply
    21,192.44x = 31,789.73 × 7,152.98
  4. Step 4: Simplify right side
    21,192.44x = 227,391,161.83
  5. Step 5: Solve for x
    x = 227,391,161.83/21,192.44
  6. Step 6: Final answer
    x = 10,729.83

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1.5x scale

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.