Home / 15,638.78-23,455.74-5,775.82

Finding the Fourth Proportional to 15,638.78, 23,455.74 and 5,775.82

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Solution

The fourth proportional to 15,638.78, 23,455.74 and 5,775.82 is: 8,662.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,638.78 : 23,455.74 = 5,775.82 : x
  2. Step 2: Convert to fraction form
    15,638.78/23,455.74 = 5,775.82/x
  3. Step 3: Cross multiply
    15,638.78x = 23,455.74 × 5,775.82
  4. Step 4: Simplify right side
    15,638.78x = 135,476,132.21
  5. Step 5: Solve for x
    x = 135,476,132.21/15,638.78
  6. Step 6: Final answer
    x = 8,662.83

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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.