Home / 11,429.33-15,775.64-6,650.20

Finding the Fourth Proportional to 11,429.33, 15,775.64 and 6,650.20

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Solution

The fourth proportional to 11,429.33, 15,775.64 and 6,650.20 is: 9,179.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.33 : 15,775.64 = 6,650.20 : x
  2. Step 2: Convert to fraction form
    11,429.33/15,775.64 = 6,650.20/x
  3. Step 3: Cross multiply
    11,429.33x = 15,775.64 × 6,650.20
  4. Step 4: Simplify right side
    11,429.33x = 104,911,121.20
  5. Step 5: Solve for x
    x = 104,911,121.20/11,429.33
  6. Step 6: Final answer
    x = 9,179.11

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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.