Home / 21,131.44-31,686.90-10,596.94

Finding the Fourth Proportional to 21,131.44, 31,686.90 and 10,596.94

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Solution

The fourth proportional to 21,131.44, 31,686.90 and 10,596.94 is: 15,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,131.44 : 31,686.90 = 10,596.94 : x
  2. Step 2: Convert to fraction form
    21,131.44/31,686.90 = 10,596.94/x
  3. Step 3: Cross multiply
    21,131.44x = 31,686.90 × 10,596.94
  4. Step 4: Simplify right side
    21,131.44x = 335,784,178.09
  5. Step 5: Solve for x
    x = 335,784,178.09/21,131.44
  6. Step 6: Final answer
    x = 15,890.26

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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.