Home / 31,390.36-43,318.47-17,242.90

Finding the Fourth Proportional to 31,390.36, 43,318.47 and 17,242.90

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Solution

The fourth proportional to 31,390.36, 43,318.47 and 17,242.90 is: 23,795.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,390.36 : 43,318.47 = 17,242.90 : x
  2. Step 2: Convert to fraction form
    31,390.36/43,318.47 = 17,242.90/x
  3. Step 3: Cross multiply
    31,390.36x = 43,318.47 × 17,242.90
  4. Step 4: Simplify right side
    31,390.36x = 746,936,046.36
  5. Step 5: Solve for x
    x = 746,936,046.36/31,390.36
  6. Step 6: Final answer
    x = 23,795.08

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