Home / 20,656.62-28,507.14-11,704.50

Finding the Fourth Proportional to 20,656.62, 28,507.14 and 11,704.50

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Solution

The fourth proportional to 20,656.62, 28,507.14 and 11,704.50 is: 16,152.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,656.62 : 28,507.14 = 11,704.50 : x
  2. Step 2: Convert to fraction form
    20,656.62/28,507.14 = 11,704.50/x
  3. Step 3: Cross multiply
    20,656.62x = 28,507.14 × 11,704.50
  4. Step 4: Simplify right side
    20,656.62x = 333,661,820.13
  5. Step 5: Solve for x
    x = 333,661,820.13/20,656.62
  6. Step 6: Final answer
    x = 16,152.78

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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.