Home / 20,960.44-31,449.77-10,440.97

Finding the Fourth Proportional to 20,960.44, 31,449.77 and 10,440.97

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Solution

The fourth proportional to 20,960.44, 31,449.77 and 10,440.97 is: 15,665.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.44 : 31,449.77 = 10,440.97 : x
  2. Step 2: Convert to fraction form
    20,960.44/31,449.77 = 10,440.97/x
  3. Step 3: Cross multiply
    20,960.44x = 31,449.77 × 10,440.97
  4. Step 4: Simplify right side
    20,960.44x = 328,366,013.40
  5. Step 5: Solve for x
    x = 328,366,013.40/20,960.44
  6. Step 6: Final answer
    x = 15,665.99

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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.