Home / 19,318.97-28,973.77-5,279.06

Finding the Fourth Proportional to 19,318.97, 28,973.77 and 5,279.06

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Solution

The fourth proportional to 19,318.97, 28,973.77 and 5,279.06 is: 7,917.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.97 : 28,973.77 = 5,279.06 : x
  2. Step 2: Convert to fraction form
    19,318.97/28,973.77 = 5,279.06/x
  3. Step 3: Cross multiply
    19,318.97x = 28,973.77 × 5,279.06
  4. Step 4: Simplify right side
    19,318.97x = 152,954,329.49
  5. Step 5: Solve for x
    x = 152,954,329.49/19,318.97
  6. Step 6: Final answer
    x = 7,917.31

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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.