Home / 30,215.92-45,317.04-11,489.28

Finding the Fourth Proportional to 30,215.92, 45,317.04 and 11,489.28

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Solution

The fourth proportional to 30,215.92, 45,317.04 and 11,489.28 is: 17,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.92 : 45,317.04 = 11,489.28 : x
  2. Step 2: Convert to fraction form
    30,215.92/45,317.04 = 11,489.28/x
  3. Step 3: Cross multiply
    30,215.92x = 45,317.04 × 11,489.28
  4. Step 4: Simplify right side
    30,215.92x = 520,659,934.75
  5. Step 5: Solve for x
    x = 520,659,934.75/30,215.92
  6. Step 6: Final answer
    x = 17,231.31

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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.