Home / 20,932.69-31,399.05-13,146.97

Finding the Fourth Proportional to 20,932.69, 31,399.05 and 13,146.97

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Solution

The fourth proportional to 20,932.69, 31,399.05 and 13,146.97 is: 19,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.69 : 31,399.05 = 13,146.97 : x
  2. Step 2: Convert to fraction form
    20,932.69/31,399.05 = 13,146.97/x
  3. Step 3: Cross multiply
    20,932.69x = 31,399.05 × 13,146.97
  4. Step 4: Simplify right side
    20,932.69x = 412,802,368.38
  5. Step 5: Solve for x
    x = 412,802,368.38/20,932.69
  6. Step 6: Final answer
    x = 19,720.46

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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.