Home / 21,310.45-31,976.23-15,674.22

Finding the Fourth Proportional to 21,310.45, 31,976.23 and 15,674.22

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Solution

The fourth proportional to 21,310.45, 31,976.23 and 15,674.22 is: 23,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,310.45 : 31,976.23 = 15,674.22 : x
  2. Step 2: Convert to fraction form
    21,310.45/31,976.23 = 15,674.22/x
  3. Step 3: Cross multiply
    21,310.45x = 31,976.23 × 15,674.22
  4. Step 4: Simplify right side
    21,310.45x = 501,202,463.79
  5. Step 5: Solve for x
    x = 501,202,463.79/21,310.45
  6. Step 6: Final answer
    x = 23,519.09

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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.