Home / 21,313.38-31,967.64-18,185.97

Finding the Fourth Proportional to 21,313.38, 31,967.64 and 18,185.97

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Solution

The fourth proportional to 21,313.38, 31,967.64 and 18,185.97 is: 27,276.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.38 : 31,967.64 = 18,185.97 : x
  2. Step 2: Convert to fraction form
    21,313.38/31,967.64 = 18,185.97/x
  3. Step 3: Cross multiply
    21,313.38x = 31,967.64 × 18,185.97
  4. Step 4: Simplify right side
    21,313.38x = 581,362,542.01
  5. Step 5: Solve for x
    x = 581,362,542.01/21,313.38
  6. Step 6: Final answer
    x = 27,276.88

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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.