Home / 20,661.44-28,536-16,002.08

Finding the Fourth Proportional to 20,661.44, 28,536 and 16,002.08

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Solution

The fourth proportional to 20,661.44, 28,536 and 16,002.08 is: 22,100.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,661.44 : 28,536 = 16,002.08 : x
  2. Step 2: Convert to fraction form
    20,661.44/28,536 = 16,002.08/x
  3. Step 3: Cross multiply
    20,661.44x = 28,536 × 16,002.08
  4. Step 4: Simplify right side
    20,661.44x = 456,635,354.88
  5. Step 5: Solve for x
    x = 456,635,354.88/20,661.44
  6. Step 6: Final answer
    x = 22,100.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.