Home / 12,455.03-18,678.60-4,556.55

Finding the Fourth Proportional to 12,455.03, 18,678.60 and 4,556.55

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Solution

The fourth proportional to 12,455.03, 18,678.60 and 4,556.55 is: 6,833.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.03 : 18,678.60 = 4,556.55 : x
  2. Step 2: Convert to fraction form
    12,455.03/18,678.60 = 4,556.55/x
  3. Step 3: Cross multiply
    12,455.03x = 18,678.60 × 4,556.55
  4. Step 4: Simplify right side
    12,455.03x = 85,110,044.87
  5. Step 5: Solve for x
    x = 85,110,044.87/12,455.03
  6. Step 6: Final answer
    x = 6,833.39

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1.5x scale

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.