Home / 30,212.80-45,308.42-11,487.86

Finding the Fourth Proportional to 30,212.80, 45,308.42 and 11,487.86

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Solution

The fourth proportional to 30,212.80, 45,308.42 and 11,487.86 is: 17,227.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,212.80 : 45,308.42 = 11,487.86 : x
  2. Step 2: Convert to fraction form
    30,212.80/45,308.42 = 11,487.86/x
  3. Step 3: Cross multiply
    30,212.80x = 45,308.42 × 11,487.86
  4. Step 4: Simplify right side
    30,212.80x = 520,496,785.78
  5. Step 5: Solve for x
    x = 520,496,785.78/30,212.80
  6. Step 6: Final answer
    x = 17,227.69

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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.