Home / 21,344.14-31,990.29-15,105.98

Finding the Fourth Proportional to 21,344.14, 31,990.29 and 15,105.98

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Solution

The fourth proportional to 21,344.14, 31,990.29 and 15,105.98 is: 22,640.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,344.14 : 31,990.29 = 15,105.98 : x
  2. Step 2: Convert to fraction form
    21,344.14/31,990.29 = 15,105.98/x
  3. Step 3: Cross multiply
    21,344.14x = 31,990.29 × 15,105.98
  4. Step 4: Simplify right side
    21,344.14x = 483,244,680.93
  5. Step 5: Solve for x
    x = 483,244,680.93/21,344.14
  6. Step 6: Final answer
    x = 22,640.63

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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.