Home / 11,555.78-15,946.60-6,519.92

Finding the Fourth Proportional to 11,555.78, 15,946.60 and 6,519.92

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Solution

The fourth proportional to 11,555.78, 15,946.60 and 6,519.92 is: 8,997.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.78 : 15,946.60 = 6,519.92 : x
  2. Step 2: Convert to fraction form
    11,555.78/15,946.60 = 6,519.92/x
  3. Step 3: Cross multiply
    11,555.78x = 15,946.60 × 6,519.92
  4. Step 4: Simplify right side
    11,555.78x = 103,970,556.27
  5. Step 5: Solve for x
    x = 103,970,556.27/11,555.78
  6. Step 6: Final answer
    x = 8,997.28

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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.