Home / 21,268.38-31,900.13-5,687.22

Finding the Fourth Proportional to 21,268.38, 31,900.13 and 5,687.22

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Solution

The fourth proportional to 21,268.38, 31,900.13 and 5,687.22 is: 8,530.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.38 : 31,900.13 = 5,687.22 : x
  2. Step 2: Convert to fraction form
    21,268.38/31,900.13 = 5,687.22/x
  3. Step 3: Cross multiply
    21,268.38x = 31,900.13 × 5,687.22
  4. Step 4: Simplify right side
    21,268.38x = 181,422,897.84
  5. Step 5: Solve for x
    x = 181,422,897.84/21,268.38
  6. Step 6: Final answer
    x = 8,530.17

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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.