Home / 28,860.86-43,292.82-9,137.90

Finding the Fourth Proportional to 28,860.86, 43,292.82 and 9,137.90

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Solution

The fourth proportional to 28,860.86, 43,292.82 and 9,137.90 is: 13,707.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,860.86 : 43,292.82 = 9,137.90 : x
  2. Step 2: Convert to fraction form
    28,860.86/43,292.82 = 9,137.90/x
  3. Step 3: Cross multiply
    28,860.86x = 43,292.82 × 9,137.90
  4. Step 4: Simplify right side
    28,860.86x = 395,605,459.88
  5. Step 5: Solve for x
    x = 395,605,459.88/28,860.86
  6. Step 6: Final answer
    x = 13,707.33

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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.