Home / 31,623.46-43,620.42-20,281.06

Finding the Fourth Proportional to 31,623.46, 43,620.42 and 20,281.06

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Solution

The fourth proportional to 31,623.46, 43,620.42 and 20,281.06 is: 27,975.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,623.46 : 43,620.42 = 20,281.06 : x
  2. Step 2: Convert to fraction form
    31,623.46/43,620.42 = 20,281.06/x
  3. Step 3: Cross multiply
    31,623.46x = 43,620.42 × 20,281.06
  4. Step 4: Simplify right side
    31,623.46x = 884,668,355.25
  5. Step 5: Solve for x
    x = 884,668,355.25/31,623.46
  6. Step 6: Final answer
    x = 27,975.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.