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Finding the Fourth Proportional to 15,102.93, 20,843.68 and 9,137.89

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Solution

The fourth proportional to 15,102.93, 20,843.68 and 9,137.89 is: 12,611.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,102.93 : 20,843.68 = 9,137.89 : x
  2. Step 2: Convert to fraction form
    15,102.93/20,843.68 = 9,137.89/x
  3. Step 3: Cross multiply
    15,102.93x = 20,843.68 × 9,137.89
  4. Step 4: Simplify right side
    15,102.93x = 190,467,150.82
  5. Step 5: Solve for x
    x = 190,467,150.82/15,102.93
  6. Step 6: Final answer
    x = 12,611.27

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1.5x scale

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.