Home / 33,128.28-45,715.68-18,971.28

Finding the Fourth Proportional to 33,128.28, 45,715.68 and 18,971.28

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Solution

The fourth proportional to 33,128.28, 45,715.68 and 18,971.28 is: 26,179.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128.28 : 45,715.68 = 18,971.28 : x
  2. Step 2: Convert to fraction form
    33,128.28/45,715.68 = 18,971.28/x
  3. Step 3: Cross multiply
    33,128.28x = 45,715.68 × 18,971.28
  4. Step 4: Simplify right side
    33,128.28x = 867,284,965.67
  5. Step 5: Solve for x
    x = 867,284,965.67/33,128.28
  6. Step 6: Final answer
    x = 26,179.60

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Why These Related Problems?

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