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Finding the Fourth Proportional to 15,611.37, 23,403.91 and 7,287

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Solution

The fourth proportional to 15,611.37, 23,403.91 and 7,287 is: 10,924.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.37 : 23,403.91 = 7,287 : x
  2. Step 2: Convert to fraction form
    15,611.37/23,403.91 = 7,287/x
  3. Step 3: Cross multiply
    15,611.37x = 23,403.91 × 7,287
  4. Step 4: Simplify right side
    15,611.37x = 170,544,292.17
  5. Step 5: Solve for x
    x = 170,544,292.17/15,611.37
  6. Step 6: Final answer
    x = 10,924.36

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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.