Home / 11,021.72-15,217.88-6,778.48

Finding the Fourth Proportional to 11,021.72, 15,217.88 and 6,778.48

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Solution

The fourth proportional to 11,021.72, 15,217.88 and 6,778.48 is: 9,359.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,021.72 : 15,217.88 = 6,778.48 : x
  2. Step 2: Convert to fraction form
    11,021.72/15,217.88 = 6,778.48/x
  3. Step 3: Cross multiply
    11,021.72x = 15,217.88 × 6,778.48
  4. Step 4: Simplify right side
    11,021.72x = 103,154,095.22
  5. Step 5: Solve for x
    x = 103,154,095.22/11,021.72
  6. Step 6: Final answer
    x = 9,359.16

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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.