Home / 20,781.91-31,313.14-17,165.17

Finding the Fourth Proportional to 20,781.91, 31,313.14 and 17,165.17

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Solution

The fourth proportional to 20,781.91, 31,313.14 and 17,165.17 is: 25,863.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781.91 : 31,313.14 = 17,165.17 : x
  2. Step 2: Convert to fraction form
    20,781.91/31,313.14 = 17,165.17/x
  3. Step 3: Cross multiply
    20,781.91x = 31,313.14 × 17,165.17
  4. Step 4: Simplify right side
    20,781.91x = 537,495,371.33
  5. Step 5: Solve for x
    x = 537,495,371.33/20,781.91
  6. Step 6: Final answer
    x = 25,863.62

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.