Home / 20,723.50-31,048.39-11,940.27

Finding the Fourth Proportional to 20,723.50, 31,048.39 and 11,940.27

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Solution

The fourth proportional to 20,723.50, 31,048.39 and 11,940.27 is: 17,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.50 : 31,048.39 = 11,940.27 : x
  2. Step 2: Convert to fraction form
    20,723.50/31,048.39 = 11,940.27/x
  3. Step 3: Cross multiply
    20,723.50x = 31,048.39 × 11,940.27
  4. Step 4: Simplify right side
    20,723.50x = 370,726,159.67
  5. Step 5: Solve for x
    x = 370,726,159.67/20,723.50
  6. Step 6: Final answer
    x = 17,889.17

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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.