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Finding the Fourth Proportional to 15,636, 23,455.44 and 5,247.84

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Solution

The fourth proportional to 15,636, 23,455.44 and 5,247.84 is: 7,872.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,636 : 23,455.44 = 5,247.84 : x
  2. Step 2: Convert to fraction form
    15,636/23,455.44 = 5,247.84/x
  3. Step 3: Cross multiply
    15,636x = 23,455.44 × 5,247.84
  4. Step 4: Simplify right side
    15,636x = 123,090,396.25
  5. Step 5: Solve for x
    x = 123,090,396.25/15,636
  6. Step 6: Final answer
    x = 7,872.24

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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.