Home / 20,778.44-28,673.70-11,347.16

Finding the Fourth Proportional to 20,778.44, 28,673.70 and 11,347.16

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Solution

The fourth proportional to 20,778.44, 28,673.70 and 11,347.16 is: 15,658.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,778.44 : 28,673.70 = 11,347.16 : x
  2. Step 2: Convert to fraction form
    20,778.44/28,673.70 = 11,347.16/x
  3. Step 3: Cross multiply
    20,778.44x = 28,673.70 × 11,347.16
  4. Step 4: Simplify right side
    20,778.44x = 325,365,061.69
  5. Step 5: Solve for x
    x = 325,365,061.69/20,778.44
  6. Step 6: Final answer
    x = 15,658.78

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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.