Home / 20,713.67-31,048.16-10,171.43

Finding the Fourth Proportional to 20,713.67, 31,048.16 and 10,171.43

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Solution

The fourth proportional to 20,713.67, 31,048.16 and 10,171.43 is: 15,246.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.67 : 31,048.16 = 10,171.43 : x
  2. Step 2: Convert to fraction form
    20,713.67/31,048.16 = 10,171.43/x
  3. Step 3: Cross multiply
    20,713.67x = 31,048.16 × 10,171.43
  4. Step 4: Simplify right side
    20,713.67x = 315,803,979.97
  5. Step 5: Solve for x
    x = 315,803,979.97/20,713.67
  6. Step 6: Final answer
    x = 15,246.17

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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.