Home / 28,682.86-43,035.32-13,890.64

Finding the Fourth Proportional to 28,682.86, 43,035.32 and 13,890.64

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Solution

The fourth proportional to 28,682.86, 43,035.32 and 13,890.64 is: 20,841.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,682.86 : 43,035.32 = 13,890.64 : x
  2. Step 2: Convert to fraction form
    28,682.86/43,035.32 = 13,890.64/x
  3. Step 3: Cross multiply
    28,682.86x = 43,035.32 × 13,890.64
  4. Step 4: Simplify right side
    28,682.86x = 597,788,137.40
  5. Step 5: Solve for x
    x = 597,788,137.40/28,682.86
  6. Step 6: Final answer
    x = 20,841.30

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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.